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Chapter 7
Paramedic: Anatomy & Physiology
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09/05/2012

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Term
the study of the structure and makeup of the organism
Definition
Anatomy 183
Term
Under the right circumstances each cardiac tissue has the ability to generate an impulse.  May be caused by hypoxia or electrolyte imbalance in the cardiac cells.
Definition
Automaticity
Term
Occurs when the bone ends partially or temporarily dislocate and the supporting ligaments are partially stretched or torn.
Definition
A Sprain
Term
the point were 2 or more bones come together, allowing movement to occur.
Definition
Joint
Term
Occurs when a muscle is stretched or torn. results in pain, swelling, and brusing of surrounding soft tissue. No ligament or joint damage.
Definition
A Strain or Muscle pull
Term
Cartilage that covers the ends of bones where they form joints. Provides cushioning and allow the bones to move smoothly against each other.
Definition
Articular Cartilage
Term
Femur, tibia, fibula, ulna, radius, and humerous
Definition
Long bones
Term
Carpal (wrist) and the tarsal (ankle).
Definition
Short bones
Term
Certain skull bones, ribs, the sternum, and scapulae.
Definition
Flat bones
Term
Many facial bones and those that make up the vertebrae in the spine and pelvis.
Definition
Irregular bones
Term
Two main types of bones
Definition
Compact(solid) and Cancellous(Spongy)
Term
Whenever two bones come in contact
Definition
Joint (articulation)
Term
slightly moveable joint
Definition
Amphiarthrotic
Term
freely moveable joint
Definition
diarthrotic
Term
immovable joint
Definition
synathrotic
Term
The 230 joints in the human body are summarized.
Definition
Fibrous, Cartilage, and Synovial Joints
Term
Outer layer of ligaments
Definition
The joint capsule
Term
Fluid-filled sacs
Definition
bursae
Term
Ball-and-socket, condyloid, gliding(plane), hinge, pivot, saddle joints.
Definition
Synovial Joints
Term
Shoulders and hips
Definition
Ball-and-socket joint
Term
Metacarpals and phalanges
Definition
Condyloid (ellipsoidal) joints
Term
Wrist and ankles
Definition
Gliding (plane) joints
Term
Elbow and phalanges
Definition
Hinge joints
Term
Proximal ends of the radius and ulna
Definition
Pivot joints
Term
Between the carpal and metacarpal bones of the thumb
Definition
Saddle joints
Term
The bone ends of the joint are held together by a fibrous sac
Definition
Joint capsule
Term
Shock absorbing fibrocartilage pads
Definition
Menisci
Term
The two main portions of the skeletal system.
Definition
Axial and appendicular skeleton
Term
Human growth hormone, thyroxine, insulin, parathyroid hormone, calcitonin, estrogen, and testosterone
Definition
Hormones involved in Bone Growth and Maintenance
Term
How many bones are in the human skeleton.
Definition
206
Term
How many bones does the skull consist of?
Definition
28
Term
The sutures should have solidified and the fontanelles closed by what age?
Definition
2 years
Term
Anterior, middle, and posterior fossa
Definition
3 compartments of the cranial vault
Term
The dura mater, arachoid, and pia mater.
Definition
Meninges
Term
Small openings, perforations, or orifices in the bones of the cranial vault.
Definition
Formina
Term
Part of both the cranial vault and the face.
Definition
Frontal and Ethmoid bones
Term
How many facial bones form the structure of the face, without contributing to the cranial vault.
Definition
14
Term
The upper jawbones that assist in the formation of the orbit, the nasal cavity, and the palate and hold the upper teeth.
Definition
Maxillae
Term
The quadrangular bones of the cheek, articulating with the frontal bone, the maxllae, the zygomatic process of the temporal bone, and the great wing of the sphenoid bone.
Definition
Zygomas
Term
Protects the eyes, nose, and tongue and provide attachment points for the muscles that allow chewing
Definition
The Facial bones
Term
The zygomatic process of the temporal bone and the temporal process of the zygomatic bone form. It also lends shape to the cheeks.
Definition
Zygomatic Arch
Term
Blood and fat leak into the maxillary sinus below the orbit from a fracture.
Definition
Blowut fracture
Term
An inflammation of the paransal sinuses that is relatively common.
Definition
Sinusitsis
Term
The hammer, anvil, and stirrup or the malleus, incus, and stapes.
Definition
3 tiny auditory bones of the ear
Term
Contains many important structures. Supported by the cervical spine, or the first 7 vertebrae in the spinal column.
Definition
The Neck
Term
A firm ridge of cartilage inferior to the thyroid cartilage, which is somewhat more difficult to palpate.
Definition
Cricoid cartilage
Term
Between the thyroid cartilage and the cricoid cartilage in the midline of the neck is a soft depression.
Definition
Cricothyroid membrane
Term
Thin sheet of connective tissue the joins the cricoid and thyroid cartilage.
Definition
Fascia
Term
Muscles on either side of the neck that allow movement of the head.
Definition
Sternocleidomastoid muscle
Term
Breastbone
Definition
Sternum
Term
The central supporting structure of the body and is composed of 33 bones, each called a vertebra.
Definition
Spinal column or vertebral column
Term
Named according to the section of the spine in which they lie and are numbered from top to bottom.
Definition
Vertebrae
Term
The 1st, consist of seven vertebae in the neck. The skull rest here.
Definition
Cervical Spine
Term
The 2nd, consists of twelve vertebrae. One pair of ribs is attached to each
Definition
Thoracic Spine
Term
The 3rd, consists of five vertebrae.
Definition
Lumbar Spine
Term
The 4th, consists of five vertebrae, are fused together to form one bone. Joined to the iliac bones of the pelvis with strong ligaments at the sacroiliac joints to form the pelvis.
Definition
Sacrum
Term
The last, consists of four vertebrae, all fused together.
Definition
Coccyx or tailbone.
Term
The first cervical vertebra.
Definition
The atlas
Term
The second cervical vertebra is known as this and is the point which the head rotates, left to right.
Definition
The axis
Term
Large offshoot of C2, which fits into the enlarged vertebral foramen of the atlas.
Definition
The Dens or Odontoid Process
Term
The cervical vertebrae numbered C3 through C6 form
Definition
Cervical curve
Term
C7 is different, it has a large spinous process that may be seen and felt at the base of the neck.
Definition
Vertebra prominens
Term
Each vertebra can be felt as it lies just under the skin in the midline of the back.
Definition
Posterior spinous process
Term
The anterior part of each vertebra consist of a round, solid block of bone.
Definition
The Body
Term
Serious of arches from one vertebra to the next forms a tunnel that runs the length of the spine
Definition
Spinal Canal
Term
The vertebrae are connected by ligaments, and between each vertebra is a cushion. These ligaments and disks allow some motion so the trunk can bend forward (flex) and back (extend), and allow for rotation and lateral movement.
Definition
The intervertebral disk
Term
Formed by the 12 thoracic vertebrae. Long transverse process that, along with the vertebral bodies, articulate with the first 10 ribs. Presence of the ribs limit movement of the thoracic spine.
Definition
The thorax (chest)
Term
12 pair of ribs. Protects organs within the thorax and prevents collaspe of the chest during breathing.
Definition
The Rib Cage
Term
The upper seven pair of ribs, articulate with the thoracic vertebrae and attach directly to the sternum, or breatbone.
Definition
True Ribs
Term
8th, 9th, and 10th ribs attach to the inferior portion of the preceding rib's cartilage instead of the sternum itself.
Definition
False Ribs
Term
The remaining 2 ribs are held in place by cartilage and have no attachment to the sternum.
Definition
Floating Ribs
Term
The manubrium, the elongated body, and the xiphoid process.
Definition
3 components of the sternum
Term
The upper part of the sternum
Definition
Manubrium
Term
The rest of the sternum excess for the xiphod process.
Definition
The Elongated Body
Term
Narrow, cartilage tip of the sternum.
Definition
Xiphoid Process
Term
Attaches the upper extremity to the body.
Definition
The Shoulder Girdle
Term
Two components of the shoulder girdle.
Definition
Scapula and Clavicle
Term
Triangle shaped, shoulder blade
Definition
Scapula
Term
Collarbone
Definition
Clavicle
Term
Protects the shoulder joints and provides a site of attachment for both the clavicle and various shoulder muscles.
Definition
Acromin Process
Term
The part of the scapula that forms the socket in the ball-in-socket joint of the shoulder.
Definition
Glenoid Fossa
Term
What is the bodies systems, operating simultneously and relying on a myrid of interactions, all work to maintain a state of balance in which organs and systems can function effectively?
Definition
Homeostasis 183
Term
What is the study of the processes and functions of the body?
Definition
Pysiology 183
Term
What studies the tissues and cellular components that cannot be seen with the naked eye?
Definition
Microscopic Anatomy 183
Term
What studies the organs and their location in the body?
Definition
Gross Anatomy 183
Term
A firm prominence of cartilage that forms the upper part of the larynx; the Adam's Apple.
Definition
Thyroid Cartilage
Term
The firm prominence in the upper part of the larynx formed by the thyroid cartilage.
Definition
Adam's Apple
Term
Floats in the superior aspect of the neck just below the mandible. Not actually part of the skull, but supports the tongue and serves as a point of attachment for many important neck and tongue muscles.
Definition
Hyoid Bone
Term
The posterior condle of the mandible articulates with the temporal bone at a condyloid joint.
Definition
Temporomandibular Joint (TMJ)
Term
The large moveable bone comprising the lower jaw and containing the lower teeth. Numerous muscles of chewing.
Definition
Mandible
Term
Hollowed sections of bone in the front of the head, which are lined with mucous membrane and drain into the nasal cavity.
Definition
Paranasal Sinues or Sinuses
Term
The seperation between the nostrils and is located in the midline.
Definition
Nasal Septum
Term
Cone-shaped fossae that encloses and protects the eyes. Contains the eyeballs, muscles that move it, nerves, and fat.
Definition
Orbit
Term
Extremely thin bone and breaks easily.
Definition
Floor of the orbit
Term
The chamber inside the nose that lies between the floor of the cranium and the roof of the mouth.
Definition
Nasal Cavity
Term
The cranial nerve for smell, sends projections through the foramina in the cribriform plate and into the nasal cavity.
Definition
Olfactory Bulb
Term
On either side of the crista galli. The horizontal bone that is perforated with numerous openings (foramina) for the passage of the olfactory nerve filaments from the nasal cavity.
Definition
Cribriform Plate or The Ethmoid Bone
Term
Forms a prominent bony ridge in the center of the anterior fossa and is the point of attachment of the meninges.
Definition
Crista Galli
Term
A cone-shaped section of bone at the base of the temporal bone.
Definition
Mastoid Process
Term
Fibrous tissue, which soften and expand during childbirth, link the sutures.
Definition
Fontanelles
Term
The bone of the skull are connected together at special joints.
Definition
Sutures
Term
The brain and the spinal cord are connected through a large opening at the base of the skull.
Definition
Foramen Magnum
Term
Consists of the 8 bones that encase and protect the brain.
Definition
Cranial Vault
Term
The area of the head above the ears and eyes. Contains the brains.
Definition
Cranium
Term
The are 6, 3 on each side of the head, deep within cavities of the temporal bone. Function in hearing.
Definition
Auditory Ossicles
Term
Sits atop the axial skeleton. Consists of 28 bones. 3 anatomic groups:
1. Auditory ossicles, 2. Cranium, 3. The Face
Definition
Skull
Term
Amount of bones in the human skeleton.
Definition
206
Term
The chest cavity that contains the heart, lungs, esophagus, and great vessels.
Definition
Thorax
Term
The arms and legs, their connection points, and the pelvis.
Definition
Appedicular Skeleton
Term
The chest or rib cage.
Definition
Thoracic Cage
Term
Forms the foundation on which the arms and legs are hung. Composed of the skull, face, thoracic cage, and vertebral column.
Definition
Axial Skeleton
Term
Required for the absorption of calcium in the small intestine.
Definition
Vitamin D
Term
Macrophages of the bone surface that dissolve the matrix and return minerals to the extracellular fluid.
Definition
Osteoclast
Term
Process where bones develop from connective tissue membranes, are replaced by spongy bone, then compact bone, to form flat bones.
Definition
Intramembranous Ossification
Term
The process of bone formation.
Definition
Endochondrial Ossification
Term
Formation of bone.
Definition
Ostegenesis
Term
The process of replacing other tissue with bone. Involves the deposition of calcium salts.
Definition
Ossification
Term
When extracellular matrix has surrounded the osteoblast. Mature bone cells.
Definition
Osteocytes
Term
Bone-forming cells.
Definition
Osteoblast
Term
Think lubricant, this oil allows the ends of the bones to glide over each other as opposed to rubbing and grating. Contains white blood cells to fight infections and provide nourishment to the cartilage covering the bone.
Definition
Synovial Fluid
Term
Allow free movement and are more complex than other type of joints. Lubricated with fluid.
Definition
Synovial Joint
Term
Connected by hyaline cartilage, or fibrocartilage, these joints include those that seperate the vertebrae. Each intervertebral disk is an example. Slightly flexible.
Definition
Cartilaginous Joints
Term
Lying between bones that closely contact each other, they are joined by thin, dense connective tissue. Suture between flat bones of the skull. Synarthrotic or immovable.
Definition
Fibrous Joints
Term
Slight, limited motion in which the bone ends are held together by fibrous tissue.
Definition
Symphysis
Term
Lacy network of bony rods. Oriented along the lines of stress to increase the weight-bearing capacity of the long bones.
Definition
Trabeculae
Term
Consists of a lacy network of bony rods called trabeculae.
Definition
Cancellous Bone
Term
Mostly solid, with few spaces and contains a central space called the marrow cavity or marrow canal.
Definition
Compact Bone (Solid)
Term
2 types: Red and Yellow. Long bones in the extremities contain adipose (fat) yellow. Bones of the axial skeleton and girdles contain red, where most red blood cells are made.
Definition
Bone Marrow
Term
An internal cavity that contains bone marrow.
Definition
Medullary Cavity
Term
Lines the inner surface of bones.
Definition
Endosteum
Term
Consists of a double layer of connective tissue, lines the outer surface of the bone.
Definition
Periosteum
Term
The growth plate of a long bone; also called the epiphyseal plate.
Definition
Epiphyses
Term
Tough white bands of tissue that connect bones to each other.
Definition
Ligaments
Term
Specialized tough cords or bands of dense white connective tissue that connect muscle to bone
Definition
Tendons
Term
Gives us our recognizable human form and protects our vital internal organs.
Definition
The Skeleton
Term
Skeletal, muscular, respiratory, circulatory, lymphatic, nervous, integumentary, digestive, endocrine, urinary and genital systems.
Definition
Organ Systems
Term
Forms an incomplete lining within the cavities of the synovial joints. Made entirely of connective tissue.
Definition
Synovial Membrane
Term
The skin, which covers the body surface.
Definition
Cutaneous Membrane
Term
Lines the body cavities that open to the outside of the body including the nose and mouth as well as digestive, respiratory, urinary, and reproductive tubes. Consists of epithelium above loose connective tissue, with goblet cells that secrete mucus.
Definition
Mucous Membrane
Term
Lines body cavities that lacks openings to the outside of the body. Form fluid called a transudate.
Definition
Serous Membrane
Term
1. Serous, 2. Mucous, 3. Cutaneous, 4. Synovial
Definition
4 Types of Membrane
Term
Thin structures made up of epithelium and underlying connective tissue. They cover the body surfaces and line body cavities.
Definition
Epithelial Membrane
Term
Crucial to neuronal functioning. These cells divide and support nervous tissue components. Phagocytize other cells and supply nutrients to neurons and help in communications between cells.
Definition
Neuroglial Cells
Term
The basic structure of neural tissue that respond to environmental changes by transmitting impulses along axons (cellular processes) to other neurons, to muscles, or to glands. Coordinate, integrate, and regulate a wide variety of functions in the body.
Definition
Neurons
Term
Specialized for the conduction of electrical impulses from one region of the body to another. (Neurons and Neuroglica or glial cells).
Found in the brain, peripheal nerves, and spinal cord.
Definition
Nervous Tissue
Term
It is a thick contractile middle layer of the heart wall. Involuntary and makes up most of the heart. Relies on pacemaker cells or nodes of tissue in the conduction system for regular contraction.
Definition
Cardiac Muscle Tissue also Myocardium
Term
Composed of elongated, spindle-shaped cells in muscles not under voluntary control. Compose hollow organs: stomach, intestine, urinary bladder, blood vessels, and uterus.
Definition
Smooth Muscle Tissue
Term
Known as voluntary muscle tissue because it is found in muscles controlled by conscious effort. Moves the head, trunk, and limbs, allowing all voluntary movement in these body areas.
Definition
Skeletal Muscle Tissue
Term
Skeletal, Smooth, and Cardiac
Definition
3 Types of Muscle Tissues
Term
Have distinctive populations of cells suspended in a water matrix. Contains disolved protein, and may be of 2 types: blood or lymph.
Definition
Fluid Connective Tissue
Term
Haversian system, cylinder-shaped. Cemented together to form the substance of bone.
Definition
Osteons
Term
Contains a small amount of ground substance, but actually consist of a dense and mineralized matrix.
Definition
Osteocytes or Bone Cells
Term
This tissue that fills the inside of bones, and is the site of production of red blood cells, platlets, an most white blood cells.
Definition
Bone Marrow
Term
The most rigid type of connective tissue, with a high mineral content that makes it harder than other types. Establishes the framework of the body. Consists of a matrix of connective tissue, blood vessel, and mineral.
Definition
Bone
Term
This tough form of cartilage absorbs shock in the spinal column, knees, and pelvic girdle.
Definition
Fibrocartilage
Term
This flexible cartilage provides framework for the ears and larynx.
Definition
Elastic Cartilage
Term
On the ends of the bones in many joints, the soft portion of the nose, and in the respiratory passages supporting rings. Important for bone growth. Most common type of cartilage.
Definition
Hyaline Cartilage
Term
A rigid connective tissue with a gelatinous matrix that contains an abundance of fibers. Supports, frames, and attaches to many underlying tissue and bone. Live totally inside the extracellular matrix. No direct blood supply and heals very slow.
Definition
Cartilage
Term
Differs from connective tissue proper because it has a less diverse cell population and a matrix that contains many more densely packaged fibers protects soft tissues and some or all of the body's weight.
2 types: Bone and Cartilage
Definition
Support Connective Tissue
Term
Helps to create a framework inside internal organs such as the spleen and liver.
Definition
Reticular Connective Tissue
Term
Binds skin to underlying organs and fills in spaces between muscles.
Definition
Areolar Tissue
Term
Lies benath the skin, between muscles, around the kidneys, behind the eyes, in certain membranes of the abdomen, on the heart's surface, and around some of the body's joint.
Definition
Adipose Tissue
Term
This tissue that fills the inside of bones, and is the site of production of red blood cells, platlets, an most white blood cells.
Definition
Bone Marrow
Term
The most rigid type of connective tissue, with a high mineral content that makes it harder than other types. Establishes the framework of the body. Consists of a matrix of connective tissue, blood vessel, and mineral.
Definition
Bone
Term
This tough form of cartilage absorbs shock in the spinal column, knees, and pelvic girdle.
Definition
Fibrocartilage
Term
This flexible cartilage provides framework for the ears and larynx.
Definition
Elastic Cartilage
Term
On the ends of the bones in many joints, the soft portion of the nose, and in the respiratory passages supporting rings. Important for bone growth. Most common type of cartilage.
Definition
Hyaline Cartilage
Term
A rigid connective tissue with a gelatinous matrix that contains an abundance of fibers. Supports, frames, and attaches to many underlying tissue and bone. Live totally inside the extracellular matrix. No direct blood supply and heals very slow.
Definition
Cartilage
Term
Differs from connective tissue proper because it has a less diverse cell population and a matrix that contains many more densely packaged fibers protects soft tissues and some or all of the body's weight.
2 types: Bone and Cartilage
Definition
Support Connective Tissue
Term
Helps to create a framework inside internal organs such as the spleen and liver.
Definition
Reticular Connective Tissue
Term
Binds skin to underlying organs and fills in spaces between muscles.
Definition
Areolar Tissue
Term
Lies benath the skin, between muscles, around the kidneys, behind the eyes, in certain membranes of the abdomen, on the heart's surface, and around some of the body's joint.
Definition
Adipose Tissue
Term
Includes adipose (fat) tissue, areolar tissue, and reticular connective tissue.
Definition
Loose Connective Tissue
Term
Contains many collagenous fibers, and appears white. Its fine network of elastic fibers contain few cells and is very strong. Has poor blood supply and is repaired very slowly.
Definition
Dense Connective Tissue
Term
Includes those connective tissues with many types of cells and extracellular fibers in a syrup-like ground substances.
Definition
Connective Tissue Proper
Term
Responsible for phagocytosis. Engulf and devour unwanted microorganisms
Definition
Macrophages
Term
Connective tissue proper, Supporting connective tissues, and Fluid connective tissue.
Definition
3 Categories of Connective Tissue
Term
Specialized cells in the deeper epithelium of the skin that are responsible for the production of melanin.
Definition
Melanocytes
Term
Store body fats
Definition
Adipocytes (Fat Cells)
Term
Distributed throughout connective tissue, usually near blood vessels, and releases both heparin and histamine.
Definition
Mast Cells
Term
Form delicate supporting networks in the spleen and other tissues.
Definition
Reticular Fibers.
Term
A measure of the tendency of water to move by osmosis across a membrance.
Definition
Osmotic Pressure
Term
The movement of a solvent, such as water, from an area of low solute concentration to one of high concentration through a selectively permeable membrane.
Definition
Osmosis
Term
The difference in concentrations of the substance on either side of the membrane.
Definition
Concentration Gradient
Term
Particles such as salts that are dissolved in a solvent.
Definition
Solutes
Term
The movement of solutes, from an area of high concentration to one of low concentration, to produce an even distribution of particles in the space available.
Definition
Diffusion
Term
Body is lying face up.
Definition
Supine
Term
Body is lying face down.
Definition
Prone
Term
Two lines intersecting at the umbilicus, dividing it into 4 equal areas.
Definition
Abd Quadrants
Term
Structures that appear on only one side of the body.
Definition
Unilateral
Term
A body part that appears on both sides of the midline.
Definition
Bilateral
Term
Describes turning an extremity away from the midline.
Definition
External Rotation
Term
Describes turning the anterior portion of an extremity toward the midline.
Definition
Internal Rotation
Term
Turning the palms downward. (Toward the ground)
Definition
Pronation of the Forearm
Term
Turning the palms upward. (Toward the sky)
Definition
Supination of the Forearm
Term
Refers to a body part that was extended to the maximum level or even beyond the normal range of motion.
Definition
Hyperextension
Term
Refers to a body part that was flexed to the maximum level or even beyond the normal range of motion.
Definition
Hyperflexion
Term
Moves the extremity toward the midline
Definition
Adduction
Term
Moves the extremity away from the midline.
Definition
Abduction
Term
The motion association with the return of a body part from flexed position to the anatomical postion.
Definition
Extension
Term
Common in body parts that are often stretched, such as the vocal cord; they are composed of a protein called elastin, and also called yellow fibers.
Definition
Elastic Fiber
Term
Important for body parts that hold structures together (ligaments and tendons); also called dense connective tissue or white fibers.
Definition
Collagenous Fibers
Term
1. Collagenous Fiber, Elastic Fibers, and Reticular Fibers
Definition
Fibroblast produce 3 connective tissue fibers
Term
The most common type of fixed cells. Produces fibers via protein secretion into the extracellular matrix.
Definition
Star-shaped Fibroblast
Term
Cells divide, have a good blood supply, and require large amounts of nourishment. Bone, cartilage, and fat.
Definition
Connective Tissue
Term
Lacking blood vessels.
Definition
Avascular
Term
Secretory structures derived from epithelia.
Definition
Glands
Term
Anchors epithelial tissue to connective tissue.
Definition
Basement Membrane
Term
Covers body surfaces, covers and line internal organs, and make up the glands.
Definition
Epithelial Tissue
Term
A substance stored in a vesicle is secreted from the cells.
Definition
Exocytosis
Term
Carry information from one part of the body to another via electrical impulses. Found in the brain, spinal cord, and nerves.
Definition
Nervous Tissue
Term
Specialized for contraction, and include the skeletal muscles of the body, the heart, and the muscular walls of hollow organs.
Definition
Muscle Tissue
Term
Widely distributed throughout the body, filling internal spaces, and function to bind, support, and protect body structure.
Definition
Connective Tissue
Term
Involves the movement of specific kinds of particles into the cell, with protein molecules extending through part of the cell membrane to the outer surface.
Definition
Receptor-Mediated Endocytosis
Term
"Cell eating" involves cell taking in solis instead of liquids.
Definition
Phagocytosis
Term
"Cell drinking" involves cells taking in small liquid droplets from the surrounding cell environment with a small indentation of the cell membrane.
Definition
Pinocytosis
Term
Pinocytosis, phagocytosis, and receptor-mediated endocytosis
Definition
3 Forms of Endocytosis
Term
Covers the surface of the skin and organs, forms the inner lining of the body's cavities, and also lines hollow organs.
Definition
Epithelium
Term
A secretion from the cell membrane moves particles too large to enter the cell by other processes within a vesicle of the cell
Definition
Endocytosis
Term
The movement of a substance against a concentration or gradient such as the cell membrane. Requires energy as well as some type of carrier mechanism and is a movement opposite of the normal movement of diffusion.
Definition
Active Transport
Term
Bind body structures, provide support and protection, create frameworks, fill body spaces, store fats, produce blood cells, transport fluids, and dissolve materials, repair damaged tissues, and protect the body from infection.
Definition
Connective Tissue
Term
Surrounds the cells. The extracellular protein fibers and ground substance. Usually counts for the majority of connective tissue.
Definition
Matrix
Term
1. Specialized cells, 2. Extracellular protein fibers, 3. A fluid known as ground substance.
Definition
The 3 Basic Functions of Connective Tissue
Term
Physical protection, permeability, sensation, and specialized secretions.
Definition
The 4 Essential Functions of Epithelia
Term
The process in which a carrier molecule moves substances in or out of cells from areas of high concentration to area of lower concentration. Energy is not required. The number of molecules transported is directly proportional to the amount of concentration.
Definition
Facilitated Diffusion
Term
The concentrations on either side of the membrane are equal.
Definition
Isotonic
Term
Less solute is present within the cell than outside.
Definition
Hypotonic
Term
If the concetration of solute is higher within the cell than outside.
Definition
Hypertonic
Term
Chemicals that are dissolved in the blood and are made up of salt or acid substances that become ionic conductors when dissolved in a solvent such as water.
Definition
Electrolytes
Term
The patient is lying on left side and the bottom arm is extended straight with head lying on it. Top knee is bent, angling the patients' body slightly toward the floor.
Definition
Recovery Position or Left Lateral Recumbent Position
Term
A patient who is sitting up with the knees bent or straight.
Definition
Fowler Position
Term
Pelvic fracture or significant lower extremity injury, sever chest injury, and severe head injury.
Definition
Contraindications of the Shock Position
Term
The head and torso are supine and the lower extremities are elevated 6 to 12 inches to help increase blood flow to the brain.
Definition
Shock Position or Modified Trendelenburg
Term
The trunk without the head and limbs.
Definition
Torso
Term
The study of the structure and makeup of the organism.
Definition
Anatomy
Term
Position in which the patient is on a backboard or stretcher with the feet 6 to 12 inches higher than the head.
Definition
Trendelenburg Position
Term
If too much water enters a cell, it will swell and burst.
Definition
Lysis
Term
If too much water moves out of the cell, the cell shrinks abnormally.
Definition
Crenation
Term
Movement of the foot toward the sole.
Definition
Plantar Flexion
Term
Movement of the foot towards the dorsal aspect.
Definition
Dorsiflexion
Term
Moving a distal point of an extremity towards the trunk.
Definition
Flexion
Term
The full distance that a joint can be moved.
Definition
Range of Motion
Term
The tip of a structure.
Definition
Apex
Term
The bottom of the foot.
Definition
Plantar Surface
Term
The front region of the hand
Definition
Palm/Palmar Surface
Term
Refers to the spinal side of the body, including the back of the hand.
Definition
Posterior or Dorsal
Term
Refers to the belly side of the body.
Definition
Anterior or Ventral
Term
Means farther inside the body and away from the skin.
Definition
Deep
Term
Means closer to or on the skin.
Definition
Superficial
Term
Describes structures that are farther from the trunk or nearer to the free end of the extremity.
Definition
Distal
Term
Describes structures that are closer to the trunk.
Definition
Proximal
Term
Part of the body that lies closer to the midline.
Definition
Medial
Term
Part of the body that lies farther from the midline.
Definition
Lateral
Term
The part of the body nearer to the feet.
Definition
Inferior
Term
The part of the body, or any body part, is the portion nearer to the head.
Definition
Superior
Term
A view of an object cut along its long axis.
Definition
Longitudinal Section
Term
The product of slicing an object across or perpendicular to its long axis, as you would do if you wanted to count the rings in a tree trunk.
Definition
Cross Section
Term
A special type of sagittal plane where the body is cut in half, leaving equal left and right halves. Nose and Navel are found along this imaginary line.
Definition
Midsagittal Plane (Midline)
Term
Body is sliced so that you have a left and a right portion.
Definition
Sagittal (Lateral) Plane
Term
The body is sliced so the result is a top and bottom portion.
Definition
Transverse (Axial) Plane
Term
Slicing the body so that you have a front and a back portion.
Definition
Frontal or Coronal Plane
Term
A position of reference in which the patient stands facing you, arms at the side, with the palms of the hand forward.
Definition
Anatomic Position
Term
Superficial landmarks of the body. To perform an accurate assessment.
Definition
Topographic Anatomy
Term
The study of how body functions change and react when the body encounters disease or when homeostasis is otherwise disturbed.
Definition
Pathophysiology
Term
A fluid-filled sac situated between a tendon and a bone that cushions and protects joints such as the shoulder, hip, or knee.
Definition
Bursa
Term
Consists of the arm, forearm, wrist, hand, and fingers.
Definition
The Upper Extremity
Term
Bone of the upper arm.
Definition
Humerus
Term
The bone located on the lateral side (the thumb side) of the forearm when the forearm is in the anatomic position.
Definition
Radius
Term
Located on the medial side(The little finger side) of the forearm when the forearm is in the anatomic position.
Definition
Ulna
Term
The proximal portion of the radius.
Definition
Radial Head
Term
The distal portion of the radius contains a small bony protrusion.
Definition
The Styloid Process
Term
The wrist is made up of a group of eight irregularly shaped bones.
Definition
The Carpals
Term
Formed by the space bounded by the trapezium and hamate dorsally and the flexor retinaculum.
Definition
Carpel Tunnel
Term
The bones that form the hand.
Definition
Metacarpals
Term
A series of small bones that exist in each finger.
Definition
Phalanges
Term
Consisting of 2 saddle-shaped articulating surfaces that are oriented at right angles to one another so that the complementary sufaces articulate with each other.
Definition
Carpometacarpal Joint of the Thumb
Term
Attaches the lower limbs to the axial skeleton. Contains a ring of bones formed by the sacrum and the coxal.
Definition
Pelvis or Pelvic Girdle
Term
The largest portion of the hip bone, it forms the prominence of the hip.
Definition
Ilium
Term
The lowest portion of the hip bone, it is L-shaped. It supports the weight of the body when sitting.
Definition
Ischium
Term
The anterior portion of the hip bone, it forms an angle known as the pubic arch.
Definition
Pubis
Term
A large opening that lies between the pubis and ischium.
Definition
The Obturator Foramen
Term
Two posterior sacroiliac joints and the interior midline pubic symphysis.
Definition
The 3 Joints of the Pelvis
Term
The location where the ilium connects with the sacrum.
Definition
The Sacroiliac Joint
Term
The lower midportion of the pelvic ring where the left and ride sides fuse.
Definition
The Pubic Symphysis
Term
Made of the thigh, knee, leg, ankle, foot, and toes.
Definition
The Lower Extremity
Term
The socket of the ball-and-socket joint that connects the pelvic girdle with the lower extremity.
Definition
Acetabulum
Term
The part of the lower extremity that extends from the hip to the knee and contains the femur.
Definition
The Thigh
Term
The longest and strongest bone in the body.
Definition
The Femur
Term
The uppermost portion of the femur and articulates with the pelvic girdle at the acetabulum.
Definition
Femoral Head
Term
Arises lateral to the juncture of the neck and shaft and is clinically considered as part of the hip.
Definition
Greater Trochanter
Term
The projection on the medial/superior portion of the femur.
Definition
Lesser Trochanter
Term
Lies within the major anterior tendon of the thigh muscle and articulates with the femur.
Definition
Kneecap or Patella
Term
Made of the tibia and fibula, and extends from the knee to the ankle.
Definition
The Leg
Term
The longer and thicker of the 2 leg bones and is situated on the anterior surface of the leg.
Definition
The Tibia
Term
The anterior portion of the tibia, only covered by skin.
Definition
The Shin
Term
Forms the medial side of the ankle joint and lies at the distal end of the tibia.
Definition
Medial Malleoulus
Term
Posterior to the tibia and does not articulate directly with the femur, but rather with the tibia at the head.
Definition
The Fibula
Term
An enlargement of the distal end of the fibula forms the lateral wall of the ankle joint.
Definition
Lateral Malleolus
Term
Extends between the tibia and femur and prevents abnormal anterior movement (hyperextension) of the tibia.
Definition
The Anterior Cruciate Ligament (ACL)
Term
Prevents abnormal posterior displacement of the tibia.
Definition
The Posterior Cruciate Ligament (PCL)
Term
Articulates with the tibia and fibula to form the ankle.
Definition
The Talus
Term
The 7 bones that make up the ankle.
Definition
Tarsals
Term
Is made up of 7 bones called tarsals that are arranged so that the talus bone moves freely where it joins the leg bone
Definition
The Ankle (Tarsus)
Term
Lies inferior and lateral to the talus, providing additional support.
Definition
The Calcaneus or Heel Bone
Term
The bones of the soles of the feet; they form the foot arches.
Definition
Metatarsals
Term
Refers to the bones and voluntary muscles of the body. Protects the vital organs of the body.
Definition
The Musculoskeletal System
Term
Form of tissue that allows body movement.
Definition
Muscles
Term
How many muscles are in the musculoskeletal system?
Definition
More the 600
Term
The muscle over which a person has no conscious control. It is found in many automatic regulating systems of the body.
Definition
Involuntary Muscle
Term
Muscle that is under direct voluntary control of the brain and can be contracted or relaxed at will.
Definition
Voluntary Muscle
Term
Individual skeletal muscles are seperated from other muscles and held in position by layers of fibrous connective tissue.
Surrounds every muscle and may form cord-like tendons beyond each muscle's end.
Definition
Fascia.
Term
Broad sheets of fibers that may attach to bones or to the coverings of other muscles.
Definition
Aponeuroses
Term
A single cell that contracts in response to stimulation and relaxes when the stimulation ceases.
Definition
Skeletal Muscle Fiber
Term
Conduct nerve impulses.
Definition
Neurons (Nerve Cells)
Term
Nerve cells that transmit instructions from the CNS to the end organs, also known as efferent neurons.
Definition
Motor Neurons
Term
Chemicals that enable neurons to communicate.
Definition
Neurotransmitter
Term
The division of chromosomes in a cell nucleus.
Definition
Mitosis
Term
Metabolism that can proceed only in the presence of oxygen.
Definition
Aerobic Metabolism
Term
The metabolism that takes place in the absence of oxygen. The principal product is lactic acid.
Definition
Anaerobic Metabolism
Term
The neurotransmitter that stimulates skeletal muscle to contract.
Definition
Acetylcholine
Term
The enzyme that causes muscle relaxation by the decomposition of acetylcholine.
Definition
Acetylcholinesterase
Term
An iron-containing pigment found in red blood cells, carries 97% oxygen. Pigment that makes blood appear red.
Definition
Hemoglobin
Term
A pigment synthesized in the muscles to give skeletal muscles their reddish-brown color.
Definition
Myoglobin
Term
Equivalent to the amount of oxygen that liver cells require to convert the lactic acid into glucose, as well as the amount needed by muscle cells to restore ATP and creatine phosphate levels.
Definition
Oxygen Debt
Term
Prolonged exercise may cause a muscle to become unable to contract. Lactic acid accumalation is the usually cause.
Definition
Muscular Fatigue
Term
A relatively immovable part of the body where a skeletal muscle is fastened at a moveable joint
Definition
Origin
Term
A moveable part of the body to which a skeletal muscle is fastened at a moveable joint.
Definition
Insertion
Term
A muscle that contracts to provide most of the desired movement.
Definition
Prime Mover or Agonist
Term
Other muscle that work with a prime mover to make its action more effective.
Definition
Synergist
Term
Other muscles cause movement in the opposite direction to the prime movers.
Definition
Antagonists
Term
Which muscles protect the intestines?
Definition
Rectus Abdominus Muscles
Term
Consists of all the structures of the body that contribute to respiration, or the process of breathing.
Definition
Respiratory System
Term
Nose, mouth, tongue, jaw, oral cavity, larynx, and pharynx.
Definition
The Upper Airway
Term
Referred to as the nasal cavity.
Definition
Nasopharynx
Term
Referred to as the oral cavity.
Definition
Oropharynx
Term
A funnel-shaped structure that opens into the nose and mouth anteriorly and joins below with the larynx.
Definition
Pharynx
Term
A rigid, hollow structure made of cartilage. Plays an important role in swallowing.
Definition
Larynx or Voice Box
Term
Composed of the nasopharynx, oropharynx, and laryngopharynx
Definition
Pharynx
Term
The mucus membrane that lines the nasal cavity.
Definition
Nasal Mucosa
Term
Located in the epithelium in the nasal cavity are responsible for recognizing odors.
Definition
Olfactory Receptors
Term
Most inferior passage of the upper airway, also known als hypopharynx.
Definition
Laryngopharynx
Term
The windpipe. The main trunk for air passing to and from the lungs.
Definition
Trachea
Term
A collapsible tube that extends from the pharynx to the stomach. Air and food enter the pharynx and the pass through to the stomach.
Definition
Esophagus
Term
Protecting the opening of the trachea is a thin, leaf-shaped valve.
Definition
Epiglottis
Term
Between the tyroid and cricoid cartilage and can be felt as a depression in the midline of the neck just inferior to the thyroid cartilage.
Definition
Cricothyroid Membrane
Term
Approximately 5 inches long and is a semirigid, enclosed air tube made up of rings of cartilage that are open in the back.
Definition
Trachea
Term
The part of the lower airway below the larynx through which air enters the lungs.
Definition
Mainstem Bronchi
Term
Constriction of the airway passages of the lung that accompanies muscle spasms.
Definition
Brochospasm
Term
Branched airways leading from the trachea to the alveoli.
Definition
Bronchial Tree
Term
A projection of the lowest portion of the tracheal cartilage.
Definition
The Carina
Term
The point of entry for the bronchi, vessels, and nerves into each lung.
Definition
Hilum
Term
Airway passages in the lungs that are formed from the division of the right and left mainstem bronchi.
Definition
Secondary Bronchi
Term
Airway passages in the lungs that are formed from branching of the secondary bronchi.
Definition
Tertiary Bronchi
Term
Small subdivisions of the bronchi and give rise to the alveolar ducts.
Definition
Bronchioles
Term
Ducts formed from division of the respiratory bronchioles in the lower airway. Each duct ends in cluster known as alveoli.
Definition
Alveolar Ducts
Term
The air sacs of the lungs in which the exchange of oxygen and carbon dioxide takes place.
Definition
Alvioli
Term
Found in the alveoli reduces surface tension to increase pulmonary compliance and prevent atelectasis at the end of expiration.
Definition
Pulmonary Surfactant
Term
The lungs contain approximately how many alveoli?
Definition
300 Million
Term
Approximately how big is each alveolus?
Definition
.33 mm in diameter
Term
The very thin membrane, consisting of only one cell layer, that lies between the alveolus and capillary, through which respiratory exchange between the alveolus and the blood vessels occurs.
Definition
Alveolocapillary Membrane
Term
The primary organs of breathing. The right contains 3 lobes and the left contains 2.
Definition
The Lungs
Term
Membrance of connective tissue that surrounds the lungs.
Definition
Pleura
Term
The pleural membrane that lines the pleural cavity.
Definition
Parietal Pleura
Term
The potential space between the parietal pleura and the visceral pleura. It is described as "potential" because under normal conditions, the space does not exist.
Definition
Pleural Space
Term
The pleural membrane that covers the lungs.
Definition
Visceral Pleura
Term
The movement of air from outside the body into and out of the bronchial tree and alvoli.
Definition
Ventilation
Term
A muscular dome that forms the undersurface of the thorax, separating the chest from the abdominal cavity.
Definition
Diaphragm
Term
The diaphragm and external intercostal muscles between the ribs relax.
Definition
Inhalation or Inspiration
Term
The diaphragm and the intercostal muscles relax.
Definition
Exhalation or Expiration
Term
Pressure within the lungs and airway.
Definition
Intrapulmonic Pressure
Term
A progressive, irreversible disease of the airway marked by decreased inspiratory and expiratory capacity of the lungs.
Definition
Chronic Obstructive Pulmonary Disease (COPD)
Term
The inhaling and exhaling of air. The physiologic process that exchanges carbon dioxide from fresh air.
Definition
Respirations
Term
Amount of oxygen in inspired air.
Definition
21%
Term
Contains 16% oxygen and 3-5% carbon dioxide. The rest is nitrogen.
Definition
Exhaled Air
Term
Process of moving air in and out of the lungs.
Definition
Ventilation
Term
How much oxygen does a patient receive during each ventilation when providing artificial ventilations?
Definition
16%
Term
The total surface area created around the alveoli
Definition
More than 85m squared
Term
A defect which occurs in the lungs whereby ventilation (the exchange of air between the lungs and the environment) and perfusion (the passage of blood through the lungs) are not evenly matched, a finding typical of COPD.
Definition
V/Q Mismatch
Term
The brain-or more specifically, the respiratory center in the brainstem.
Definition
Controls Breathing
Term
Accumulation of carbon dioxide in the blood.
Definition
Main Respiratory Stimulus
Term
Results in decreased pH levels in the respiratory center, which triggers an increase in ventilation.
Definition
Increased Paco2
Term
Results in increased pH levels in the respiratory center and a decrease in ventilation.
Definition
Decreased Paco2
Term
A backup system to control respirations. Senses drops in the oxygen level in the blood.
Definition
Hypoxic Drive
Term
A measurement of the amount of carbon dioxide in the blood.
Definition
Partial Pressure of Carbon Dioxide (Paco2)
Term
A measurement of the amount of oxygen in the blood.
Definition
Partial Pressure of Oxygen (Pao2)
Term
A pathologic condition characterized by a blood pH of less than 7.35, and caused by accumulation of acids in the body from a respiratory cause.
Definition
Respiratory Acidosis
Term
A pathologic condition characterized by a blood pH of greater than 7.45, and resulting from the accumulation of bases in the body from a respiratory cause.
Definition
Respiratory Alkalosis
Term
A pathologic condition characterized by a blood pH of less than 7.35, and caused by accumulation of acids in the body from a metabolic cause.
Definition
Metabolic Acidosis
Term
A pathologic condition characterized by a blood pH of greater than 7.45, and resulting from the accumulation of bases in the body from a metabolic cause.
Definition
Metabolic Alkalosis
Term
A substance that can absorb or donate hydrogen.
Definition
Buffer
Term
Act as rapid defenses for acid-base changes, providing almost immediate protection against changes in the hydrogen ion concentration of the extracellular fluid.
Definition
Buffer System
Term
What is the fastest way the body can get rid of excess acid.
Definition
Respiratory System
Term
The function is to keep you breathing so you do not have to think about it.
Definition
Medulla Oblongata
Term
A portion of the medulla oblongata that is responsible for modulating breathing during speech.
Definition
Ventral Respiratory Group (VRG)
Term
A portion of the medulla oblongata where the primary respiratory pacemaker is found.
Definition
Dorsal Respiratory Group (DRG)
Term
A portin of the pons that assists in creating shorter, faster respirations.
Definition
Pneumotaxic (pontine) Center
Term
A portion of the pons that assists in creating longer, slower respirations.
Definition
Apneustic Center
Term
A protective mechanism that terminates inhaltion, thus preventing overexpansion of the lungs.
Definition
Hering-Breuer Reflex
Term
What is the adult male total lung capacity?
Definition
6000 mL
Term
What is the approximate total lung capacity of an adult female?
Definition
4000 mL, about 1/3 less than an adult male
Term
Unless you just finished exercising, the amount of your air movement?
Definition
500 mL
Term
The amount of air that is moved into or out of the lungs during a single breath.
Definition
Tidal Volume
Term
The deepest breath you can take after a normal breath.
Definition
Inspiratory Reserve Volume
Term
The maximum amount of air that you can forcibly breathe out after a normal breath.
Definition
Expiratory Reserve Volume
Term
Gas that remains in the lungs simply to keep the lungs open.
Definition
Residual Volume
Term
The amount of air moved in and out of the lungs with maximum inspiration and expiration.
Definition
Vital Capacity
Term
How much air does a typical bag-mask device hold?
Definition
1000-1200 mL
Term
The portion of the respiratory system that has no alveoli, and, therefore, little or no exchange of gas between air and blood occurs. Mouth, trachea, bronchi, and bronchioles are examples.
Definition
Dead Space
Term
The amount of air that moves in and out of the lungs in 1 minute minus the dead space.
Definition
Minute Volume
Term
Respiratory Rate x Tidal Volume
Definition
Minute Volume
Term
Breathing requires effort and may involve accessory muscles.
Definition
Labored Breathing
Term
Adult respiratory rate
Definition
12-20 breaths/min
Term
Children respiratory rate
Definition
15-30 breaths/min
Term
Infant respiratory rate
Definition
25-50 breaths/min
Term
Occur when the respiratory center in the brain continues to send signals to the breathing muscles. Appear to be breathing after normal respirations have stopped.
Definition
Agonal Gasp
Term
Includes the heart and a complex arrangement of connected tubes, including the arteries, arterioles, capillaries, venules, and veins.
Definition
Circulatory System or Cardiovascular System
Term
The portion of the circulatory system outside of the heart and lungs and travels throughout the body.
Definition
Systemic Circulation
Term
Travels only between the heart and lung.
Carries oxygen-poor blood from the right ventricle through the lungs and back to the left atrium.
Blood passes through the lungs, it is refreshed with oxygen and gives up carbon dioxide.
Definition
Pulmonary Circulation
Term
Muscular organ that pumps blood throughout the body.
Definition
Heart
Term
Heart muscle
Definition
Myocardium
Term
The space between the lungs, in the center of the chest.
Contains the heart, trachea, mainstem bronchi, part of the esophagus, and large blood vessels.
Definition
Mediastinum
Term
A thick, fibrous membrane that surrounds the heart.
Anchors the heart within the mediastinum and prevents overdistention of the heart.
Has an outer, fibrous membrane (parietal), and inner membrane (visceral).
Definition
Pericardium or Pericardial Sac
Term
Between the parietal and visceral layers and has about 5ml of serous fluid that reduces friction between the pericardial membranes as the heart moves within them.
Definition
Pericardial Cavity
Term
Outer epicardium, middle myocardium, and inner endocardium.
Definition
3 layers of the Heart Wall
Term
Protects the heart by reducing friction, and is the visceral portion of the pericardium on the surface of the heart.
Definition
Epicardium
Term
Made mostly of cardia muscle tissue that is organized in planes and richly supplied by blood capillaries, lymph capillaries, and nerve fibers.
It pumps blood out of the chambers of the heart.
Definition
Myocardium
Term
Made up of epithelium and connective tissue with many elastic and collagenous fibers.
It also contains blood vessels and specialized cardiac muscle fibers known as Purkinje Fibers.
Definition
Endocardium
Term
Membrane that seperates the two atria.
Definition
Interatrial Septum
Term
A thicker wall that seperates the two ventricles.
Definition
Interventricular Septum
Term
One of the 2 lower chambers of the heart.
Definition
Ventricles
Term
One of the 2 upper chambers of the heart.
Definition
Atrium
Term
Seperate the upper and lower portions of the heart and prevents blow from flowing backward.
Definition
Atrioventricular Valves
Term
Valves located between the ventricles and arteries.
Definition
Semilunar Vavles
Term
Veins that collect blood that is returning from the walls of the heart.
Definition
Coronary Sinus
Term
A depression between the right and left atria that indicates where the foramen ovale had been located in the fetus.
Definition
Fossa Ovalis
Term
An opening between the two atria that is present in the fetus but normally closes shortly after birth.
Definition
Foramen Ovale
Term
Seperates the right atrium from the right ventricle
Definition
Tricuspid Valve
Term
Seperates the left atrium from the left ventricle.
Definition
Mitral or Bicuspid Valve
Term
The flaps that comprise the heart valves.
Definition
Cusps
Term
Specialized muscles that attach the ventricles to the cusps of the valves by muscular strands called chordae tendineae.
Definition
Papillary Muscle
Term
Thin bands of fibrous tissue that attach to the valves in the heart and prevent them from inverting.
Definition
Chordae Tendineae
Term
Regulates blood flow from the right ventricle to the pulmonary artery.
Definition
Pulmonic Valve
Term
Regulates blood flow from the left ventrice to the aorta.
Definition
Aortic Valve
Term
Blood from the upper part of the body returns deoxygenated blood to the heart.
Definition
Superior Vena Cava
Term
Blood from the lower part of the body returns deoxygenated blood to the heart.
Definition
Inferior Vena Cava
Term
The body's largest artery.
Definition
Aorta
Term
The strongest and largest of the four cardiac chambers.
Definition
Left Ventricle
Term
The sudden closure of the mitral and tricuspid valves at the start of ventricular contraction
Definition
S1 (Lub)
Term
The closure of both the aortic and pulmonary valves at the end of ventricular contraction.
Definition
S2 (Dub)
Term
A soft, low-pitched heart sound that occurs about 1/3 of the way through diastole (period where ventricle is relaxed)
Definition
S3 (Da)
Term
A medium-pitched sound that occurs immediately before the normal s1 sound.
Represents either decreased stretching of the left ventricle or increased pressure in the atria. Almost always abnormal.
Definition
S4 (Bla)
Term
A abnormal "whooshing-like" sound heard over the heart that indicate turbulent blood flow through the heart valves.
Definition
Murmur
Term
An abnormal "whooshing-like" sound heard over a main blood vessel the indicates turbulant blood flow within the blood vessel.
Definition
Bruit
Term
Indicate abnormal ardiac valve funtion.
Definition
Ejection Click and Opening Snaps
Term
A group of complex electrical tissues within the heart that initiate and transmit stimuli that result in contractions of myocardial tissue.
Definition
Electrical Conduction System
Term
The most common natural pacemaker. Nonspecific cell or group of cells located high in the right atrium and is the normal site of origin of the electrical impulse.
Definition
Sinoatrial (SA) Node
Term
The site located in the AV junction that is responsible for transiently slowing electrical conduction.
Definition
Atrioventricular (AV) Node
Term
Part of the conduction system of the heart, a continuation of the atrioventricular node.
Definition
Bundle of His
Term
Effect of the rate of contraction.
Definition
Chronotropic Effect
Term
Effect of the rate of electrical conduction.
Definition
Dromotropic Effect
Term
Effect of the strength of contraction.
Definition
Inotropic Effect
Term
Respond to changes in pressure, usually within the heart or the main arteries.
Definition
Barorecptors
Term
Senses changes in the chemical composition of the blood.
Definition
Chemoreceptors
Term
The strength of heart muscle contraction.
Definition
Contractility
Term
The number of heart beats per minute.
Definition
Heart Rate
Term
Stimulation of alpha receptors that result in vasoconstriction.
Definition
Alpha Effects
Term
Stimulations of beta receptors that results in inotropic, dromotropic, and chronotropic states.
Definition
Beta Effects
Term
Naturally occuring hormones that also may be given as cardiac drugs.
Definition
Epinephrine, Norepinephrine, or Catecholamines
Term
Has a greater stimulatory effect on beta receptors.
Definition
Epinephrine
Term
Has predominant stimulatory actions on alpha receptors.
Definition
Norepinephrine
Term
The process that creates the pumping of the heart.
Definition
Cardiac Cycle
Term
A term that refers to the contraction of the ventricular mass and the pumping of blood into the systemic and pulmonary circuits.
Definition
Systole
Term
The relaxation phase of the heart.
Definition
Diastole
Term
The difference between the systolic and diastolic pressures.
Definition
Pulse Pressure
Term
Systolic pressure - Diastolic Pressure
Definition
Pulse Pressure
Term
The pressure in the aorta against which the left ventricle must pump blood.
Definition
Afterload
Term
The amount of blood ejected per contraction.
Definition
Stroke Volume (SV)
Term
The amount of blood pumped through the circulatory system in 1 minute.
Definition
Cardiac Ouput
Term
Stroke Volume x Heart Rate
Definition
Cardiac Output
Term
Cardiac muscle when it is stretched, it contracts with greater force.
Definition
Frank-Starling Mechanism or Starling's Law
Term
The amount of blood returning to the right atrium may vary somewhat from minute to minute, but the normal heart continues to pump out the same percentage of blood returned.
Definition
Ejection Fraction
Term
The pressure under which a ventricle fills.
Definition
Preload
Term
Carry blood away from the heart.
Definition
Arteries
Term
Carry blood back to the heart.
Definition
Veins
Term
The smallest branches of arteries leading to the vast network of capillaries.
Definition
Arterioles
Term
The tiny blood vessels between the arterioles and venules that permit transfer of oxygen, carbon dioxide, nutients, and waste between body tissues and the blood.
Definition
Capillaries
Term
The outer layer of tissue of a blood vessel wall, composed of elastic and fibrous connective tissue.
Definition
Tunica Adventitia
Term
The smooth, thin, inner lining of a blood vessel.
Definition
Tunica Intima
Term
The middle and thickest layer of tissue of a blood vessel wall, composed of elastic tissue and smooth muscle cells that allow the vessel to expand or contract in response to changes in blood pressure and tissue demand.
Definition
Tunica Media
Term
Arteries that arise from the aorta shortly after it leaves the left ventricle and supply the heart with oxygen and nutrients.
Definition
Coronary Arteries
Term
One of the 2 branches of the left main coronary artery that is the largest and shortest of the myocardial blood vessels
Definition
Left Anterior Descending Artery (LAD)
Term
One of the 2 branches of the left main coronary artery.
Definition
Circumflex Coronary Arteries
Term
Arises from the left ventricle and withstands the highest pressure of any vessel in the body.
Definition
Ascending Aorta
Term
The aorta arches posteriorly and to the left.
Definition
Aortic Arch
Term
The Brachiocephalic Artery, The Left Common Carotid Artery, and The Left Subclavian Artery
Definition
3 Arteries of The Aortic Arch
Term
The major artery that supplies blood to the head.
Definition
Carotid Artery
Term
The longest portion of the aorta and is subdivided into the thoracic aorta and the abdominal aorta.
Definition
Descending Aorta
Term
The first vessel to branch from the aortic arch.
Definition
Brachiocephalic Artery
Term
The proximal part of the main artery of the arm, which supplies the brain, neck, anterior chest wall, and shoulder.
Definition
Subclavian Arteries
Term
Each common carotid artery branches at the angle of the mandible into the internal and external carotid arteries.
Definition
Carotid Bifurcation
Term
A slight dilation which contains structures that are important in regulating blood pressure.
Definition
Carotid Sinus
Term
The major vessel in the upper extremity that supplies blood to the arm.
Definition
Brachial Artery
Term
Supplies blood to the thigh, external genitalia, anterior abdominal wall, and knee.
Definition
Femoral Artery
Term
A continuaion of the femoral artery at the knee.
Definition
Popliteal Artery
Term
The artery on the anterior surface of the foot between the first and second metatarsals.
Definition
Dorsalis Pedis Artery
Term
The artery just behind the medial malleolus. Supplies blood to the foot.
Definition
Posterior Tibial Artery
Term
The two main veins that drain the head and neck.
Definition
Jugular Veins
Term
More superficial and often visible immediately beneath the skin. Drains the posterior head and neck.
Definition
External Jugular Vein
Term
Drains the cranial vault as well as the anterior portion of the head, face, and neck.
Definition
Internal Jugular Vein
Term
Spaces between membranes surrounding the brain. Primary means of venous drainage from the brain and feeds into the internal jugular vein.
Definition
Venous Sinuses
Term
The proximal part of the main vein of the arm.
Definition
Subclavian Vein
Term
The vein that is formed from the combination of the basilic and cephalic veins.
Definition
Axillary Vein
Term
2 major veins of the arm that combine to form the axillary vein
Definition
Basilic and Cephalic Veins
Term
A specialized part of the venous system that drains blood from the liver, stomach, intestines, and spleen.
Definition
Hepatic Portal System
Term
The vein in which blood empties after liver cells in the sinusoid of the liver extract nutrients, filter the blood, and metabolize various drugs.
Definition
Hepatic Veins
Term
The longest vein in the body. It drains the foot, leg, and thigh. Empties into the femoral vein.
Definition
Great Saphenous Vein
Term
A continuation of the sphenous vein which drains into the external iliac vein.
Definition
Femoral Vein
Term
The vein the forms when the anterior and posterior tibial veins unite at the knee. Ascends through the thigh becoming the femoral vein.
Definition
Popliteal Vein
Term
The substance that is pumped by the heart through the arteries, veins, and capillaries.
Definition
Blood
Term
How much blood does the human adult male body hold?
Definition
70mL/kg or 5L
Term
Watery, straw-colored fluid that accounts for more than half of the total blood volume.
Definition
Plasma
Term
Constitutes 92% of plasma.
Definition
Water
Term
Constitutes 7% of plasma.
Definition
Proteins
Term
Make up the majority of the plasma proteins
Definition
Albumins
Term
Antibodies made by the liver that make up around 36% of plasma proteins.
Definition
Globulins
Term
Important for blood coagulation, makes up about 4% of the plasma proteins.
Definition
Fibrinogn
Term
The creation of all formed elements.
Definition
Hematopoeisis
Term
Carry oxygen to the tissues. They are disk-shaped, and are also know as erythrocytes. Between 4.2 and 5.8 million per cubic millimeter of blood.
Definition
Red Blood Cells
Term
Ongoing process by which red blood cells are made.
Definition
Erythropoiesis
Term
Approximately how many red blood cells are contained in the normal adult circulation?
Definition
25 Trillion
Term
How many erythrocytes are destroyed every second?
Definition
2.5 Million
Term
What is the life span of a red blood cell?
Definition
120 Days
Term
A waste product of red blood cell destruction that undergoes further metabolism in the liver.
Definition
Bilirubin
Term
Proteins recognized by the immune system.
Definition
Antigens
Term
Proteins that react with antigens.
Definition
Antibodies
Term
When blow flow to the kidneys decreases or the oxygen content of the air in the lungs declines, oxygen concentrations in the blood are low. Could occur from disease, high altitude, or anemia.
Definition
Hypoxia
Term
Also known as leukocytes. Primary function is to fight infection.
Definition
White Blood Cells
Term
How many white blood cells are in a microliter of human blood?
Definition
4,500-10,000
Term
A process whereby leukocytes leave blood vessels to move toward tissue where they are needed most.
Definition
Diapedesis
Term
Type of leukocyte that has large cytoplasmic granules that are easily seen with a simple light microscope.
Definition
Granulocytes
Term
White blood cells that lack granules.
Definition
Agranulocytes
Term
Neutrophils, eosinophils, and basophils
Definition
Types of Granulocytes
Term
Monocytes and lymphocytes
Definition
Types of Agranulocytes
Term
Normally the most common granulocyte in blood. Destroy bacteria, antigen-antibody complexes, and foreign matter.
Definition
Neutrophils
Term
Granulocytes that contain granules that stain bright red with the acidic stain, eosin. Funtion in the body's allergic response. Increased in people with allergies.
Definition
Eosinophils
Term
The least common of all granulocytes and play a role in both allergic and inflammatory reactions. Contain large amounts of histamine and heparin.
Definition
Basophils
Term
A substance that increases tissue inflammation.
Definition
Histamine
Term
A substance that inhibits blood clotting.
Definition
Heparin
Term
The smallest of the agranulocytes, they originate in the bone marrow but migrate through the blood to the lymphatic tissues.
Definition
Lymphocytes
Term
Migrate out of the blood and into the tissues in response to an infection. They engulf microbes and digest them in a process called phagoctosis. Once in the tissues, they mature into long lived macrophages.
Definition
Monocytes
Term
A decrease in the number of red blood cells.
Definition
Anemia
Term
Small cells in the blood that are necessary for the series of chemical reactions that occur to form a clot.
Definition
Platlets
Term
What is the platlet count per microliter of blood?
Definition
150,000-500,000
Term
Control of bleeding by formation of a blood clot.
Definition
Hemostasis
Term
A chemical that stimulates clotting of blood.
Definition
Thromboplastin
Term
An alpha globulin made in the liver that is converted into thrombin.
Definition
Prothrombin
Term
An enzyme that causes the conversion of fibrinogen to fibrin, which binds to the platlet plug, forming the final clot.
Definition
Thrombin
Term
Long, branching fibers that produce a weblike network in the wall of the damaged blood vessel. Binds to the platlet plug, forming a plug that stops the flow of blood to the tissue.
Definition
Fibrin
Term
A major component in the fibrinolytic system, in which clots that have already formed are lysed or disrupted, converting plasminogen to plasmin.
Definition
Tissue Plasminogen Activator (t-PA)
Term
An enzyme that dissolves the fibrin blood cloot.
Definition
Plasmin
Term
Most easily palpated at the neck, wrist, or groin, is a pressure wave created by the forceful pumping of blood out the left ventricle and into the major arteries.
Definition
Pulse
Term
The pressure that the blood exerts against the walls of the arteries as it passes through them.
Definition
Blood Pressue
Term
Blood pressure cuff.
Definition
Sphgmomanometer
Term
The resistance that blood must overcome to be able to move within the blood vessels. Related to the amount dilation or constriction in the blood vessel.
Definition
Systemic Vascular Resistance (SVR)
Term
How much blood does the average adult have in the vascular system?
Definition
Approximately 5L
Term
How much blood does the average child have in the vascular system?
Definition
2-3L
Term
How much blood does the average infant have in the vascular system?
Definition
About 300mL
Term
The circulation of blood in an organ or tissue in adequate amounts to meet the cells' current needs.
Definition
Perfusion
Term
The state of inadequate circulation, when it involves the entire body.
Definition
Shock or Hypoperfusion
Term
Approximately what percentage of blood is found within the heart, arteries, and capillaries?
Definition
30%
Term
What percentage of blood is found in the vein and venules?
Definition
70%
Term
Space between the cells.
Definition
Interstitial Space
Term
Pressure exerted by a liquid and occurs when blood is moved through the artery at a relatively high pressure.
Definition
Hydrostatic Pressure
Term
Form of osmotic pressure exerted by proteins in the blood plasma that usually tends to pull water into the circulatory system.
Definition
Oncotic Pressure
Term
Occurs as the result of a complex chemical process that creates small fibers near the injured blood vessel, traping red blood cells.
Definition
Coagulation or Clotting
Term
The primary function is the production, maintenance, and distrbution of lymphocytes. Transport lymph by passive circulation.
Definition
Lymphatic System
Term
A thin plasm-like fluid formed from interstitial or extracellular fluid that bathes the tissues of the body.
Definition
Lymph
Term
Thin-walled vessels through which lymph circulates through the body. They travel close to the major veins.
Definition
Lymph Vessels
Term
Round or bean-shaped structures that are interspersed along the cours of the lymph vessels, and returns to the main circulatory system via the thoracic duct.
Definition
Lymph Nodes
Term
One of the two great lymph vessels. It empties into the superior vena cava.
Definition
Thoracic Duct
Term
A gland that is larger in children but shrinks with age. It secretes thymosins, which are important in early immunity by affecting production and differentiation of lymphocytes.
Definition
Thymus
Term
Located in the upper left abd cavity, inferior to the diaphragm and posterior and lateral to the stomach. Body's largest lymphatic organ, resembling a large, subdivided lymph node. Contains the largest amount of lymphatic tissue in adult's body.
Definition
Spleen.
Term
Defends against many different types of pathogens. Mechanical barrier being the first line of defense.
Definition
Innate (Nonspecific) defense
Term
More precise, and target specific pathogens. Specialized lymphocytes recognize foreign molecules and act against them.
Definition
Adaptive (Specific) defense or Immunity
Term
Mechanical barrier, chemical barriers, NK cells, inflammation, phagocytosis, fever, and species resistance.
Definition
Innate (Nonspcefic) defense
Term
Include skin and the mucous membrances. Protect against certain infectious agents. Hair, sweat, and mucous.
Definition
Mechanical Barriers
Term
Provided by enzymes and other chemicla substances in the body fluid.
Definition
Chemical Barriers
Term
Hormone-like peptides that bind to uninfected cells and stimulate them to make protective proteins.
Definition
Interferons
Term
A group of proteins in plasma and other body fluids that interact to cause inflammation and phagocytic activities.
Definition
Complement
Term
Elevation of body temperature that reduces iron in the blood, which inhibits bacterial and fungal reproduction. Increases phagocytosis (macrophages)
Definition
Fever
Term
A tissue response to injury or infection that may include redness, swelling, heat, and pain. Infected area attract white blood cells, which engulf them.
Definition
Inflammation
Term
The constant monitoring, recognizing, and destruction of abnormal cells by NK cells in peripheral tissues. NK cells defend the body against cancer cells and various viruses.
Definition
Immunologic Surveillance
Term
Detect, process, and present foreign materials or germs to other parts of the immune system, stimulating an immune response.
Definition
Langerhans Cells (Antigen-presenting cells)
Term
Injured tissues attract neutrophils and monocytes, which engulf and digest particles (patogens and cell debris). Monocytes influence the development of macrophages that attach to blood and lymphatic vessels.
Definition
Phagocytosis
Term
Phagocytic cells that remove foreign particles from the lymph and blood.
Definition
Mononuclear Phagocytic System
Term
May be resistant to certain diseases that affect animals.
Definition
Species Resistance
Term
3rd line of defense. Resistance to specific pathogens or their toxins and metabolic by products.
Definition
Immunity
Term
As a fetus develops, cells learn to recognize proteins and large molecules.
Definition
Self
Term
Foreign antigens.
Definition
Nonself
Term
A small molecule that cannot stimulate an immune response by itself. Usually combine with larger, more complex molecules to elicit an immune response.
Definition
Hapten
Term
Specialized lymphocyte precursors that make up the majority of circulated blood lymphocytes, 70-80%
Definition
T Lymphocytes (T Cells)
Term
Distributed by the blood, and make up between 20-30% of the circulating lymphocytes. Abundant in the lymph nodes, bone marrow, and intestinal lining, and spleen.
Definition
B Lymphocytes (B Cells)
Term
Occurs when T cells attach to foreign, antigen-bearing cells such as bacterial cells, and interact with direct cell-to-cell contact.
Definition
Cellular Immune Response or Cell-Mediated Immunity
Term
Cells that produce antibodies (immunoglobulins) to destroy antigens or antigen-containing particles. Formed from divided and differentiated B cells.
Definition
Plasma Cells
Term
When antibodies react to destroy antigens r antigen-containing particles.
Definition
Humoral Immune Response
Term
Round, soluble proteins making up the gamma globulin part of the plasma protein.
Definition
Antibodies
Term
IgG, IgA, IgM, IgD, and IgE
Definition
5 Major Types of Antibodies
Term
A single molecule in plasma and tissue fluid. Effective against bacteria, viruses, and toxins. It activates complement.
Definition
Immunoglobulin G (IgG)
Term
In exocrine glands secretions, breast milk, tears, nasal fluid, gastric juice, intestinal juice, bile, and urine.
Definition
Immunoglobulin A (IgA)
Term
Composed of 5 single molecules found together, it is the first antibody to be produced in response to infection. Responds to certain antigens in foods or bacteria. Activates complement.
Definition
Immunoglobulin M (IgM)
Term
On the surface of most B cells, especially in infants. Important in the activation of B cells. It may play a roll in regulation of the humoral immune response.
Definition
Immunoglobulin D (IgD)
Term
Attaches to mast cells and basophils, and is involved in allergic reactions.
Definition
Immunoglobulin E (IgE)
Term
Can be caused by natrul events or by administration (oral or injected) of suspensions of killed or weakened pathogens or their molecules. Can be active or passive.
Definition
Adaptive (aquired) immunity
Term
Long-lasting, and occurs when a patient produces an immune response to an antigen.
Definition
Active Immunity
Term
Occurs when antibodies produced by another person are received by a patient; it has only short-term effects.
Definition
Passive Immunity
Term
Occurs when a person develops a disease from exposure to a pathogen. Resistance then occurs as a result of the primary immune response.
Definition
Naturally Aquired Active Immunity
Term
Consists of ready-made antibodies that can be obtained from gamma globulin aquired from people who are already immune to the same disease. Artificially aquired passive immunity.
Definition
Antiserum
Term
How long does an fetus, after birth, have naturally aquired passive immunity?
Definition
6 months to 1 Year
Term
When an immune response occurs because of a nonharmful substance.
Definition
Allergic Response
Term
An antigen that triggers an allergic response.
Definition
Allergen
Term
Results from repeated exposure of the skin to certain chemicals. Usually takes about 48 hours to occur.
Definition
Delayed-reaction Allergy
Term
Affects people with inherited tendencies to overproduce IgE antibodies because of certain antigens. It takes only a few minutes to occur, and subsequent reexposure continues to trigger allergic reactions.
Definition
Immediate-reaction Allergy
Term
When the immune system fails to distinguish self from nonself, it may produce autoantibodies as well as cytotoxic T cells that attack and damage the body's tissues and organs, "attack against self".
Definition
Autoimmunity
Term
About how many people have autoimmune disorder?
Definition
5%
Term
Perhaps the most complex organ system within the human body. Contains the brain and spinal cord, and thousands of nerves that allow every part of the body to communicate.
Definition
Nervous System
Term
The part of the peripheal nervous system that regulates activities over which there is voluntary control, such as walking, talking, and writing.
Definition
Somatic Nervous System (Voluntary)
Term
Controls the many body functions that occur without voluntary control, such as digestion, dilation and contriction of blood vessels, sweating, and all other involuntary actions that are necessary for basic body function.
Definition
Autonomic Nervous System (Involuntary)
Term
The brain and spinal cord.
Definition
Central Nervous System (CNS)
Term
The part of the nervous system that consists of 31 pairs of spinal nerves and contains the 12 cranial nerves. May be sensory nerves, motor nerves, or connecting nerves.
Definition
Peripheal Nervous System (PNS)
Term
Nerve cells that contain axons and dendrites.
Definition
Neurons
Term
What two basic cell types does neural tissue contain?
Definition
Neurons and Neuroglia
Term
Extensions from neurons that send out electrochemical messages.
Definition
Axons
Term
Extensions from neurons that receive electrochemical messages.
Definition
Dendrites
Term
Supporting cells that provide a supporting skeleton for neural tissue, isolate and protect the cell membranes of neurons, regulate the composition of interstitial fluid, defend neural tissue from pathogens, and aid in the repair of injury.
Definition
Neuroglia
Term
Usually found between neurons and blood vessels.
Definition
Astrocytes
Term
Covers specialized brain parts and form inner linings enclosing spaces inside the brain and spinal card. Secrete spinal fluid.
Definition
Ependymal Cells
Term
Found throughout the central nervous system, they phagocytize bacterial cells and cellular debris.
Definition
Microglical Cells
Term
Found aligned along nerve fibers, they provide insulating layers of myelin around axons within the brain and spinal cord
Definition
Oligodendrocytes
Term
Astrocytes, Ependymal Cells, Microglial Cells, and Oligodendrocytes.
Definition
Neuroglia classifications
Term
Narrow gaps between Schwann cells.
Definition
Nodes of Ranvier
Term
Neuroglial cells in the peripheral nervous system that form a myelin sheath around axons.
Definition
Schwann Cells
Term
Surrounded by a myelin sheath manufactured by a form of nervous tissue called Schwann cells.
Definition
Myelinated Axons
Term
Action potential electrical signals in the nerves propagate along the entire axon membrane, making speed of transmission slower.
Definition
Unmyelinated Axons
Term
How far are the intervals of the Nodes of Ranvier on Schwann cell?
Definition
1-1.5mm
Term
Bundles of myelinated nerves.
Definition
White Matter
Term
Carry nerve impulses from the peripheral body parts into the brain or spinal cord. Mostly unipolar but some are bipolar. May have receptor ends at the tips of the dendrites or receptor cells that are associated with the dendrites in the sensory organs or the skin.
Definition
Sensory/Afferent Neurons
Term
Within the brain and spinal cord, they are multipolar. Cell bodies form masses called nuclei, which are similar to ganglia.
Definition
Interneurons (Association or Internuncial Neuron)
Term
Carry impulses out of the brain or spinal cord to effectors, they are multipolar.
Definition
Motor/Efferent Neurons
Term
Sensory/Afferent Neurons, Interneurons, and Motor/Efferent Neurons.
Definition
Functions of Neurons
Term
Multipolar, Bipolar, and Unipolar Neurons
Definition
3 Major Groups of Neurons
Term
Make up most of the neurons whose cell bodies lie within the brain or spinal cord. Have many processes that arise from the cell bodies, with one process being an axon and the rest being dendrites.
Definition
Multipolar Neurons
Term
Exist in specialized parts of the eyes, nose, and ears. They have only two processes arising from their cell bodies. Only one process of each neuron is an axon, the rest are dendrites.
Definition
Bipolar Neurons
Term
Often aggregate in specialized ganglia located outside the brain and spinal cord. They have a single process extending from the cell body that divides into two branches that funcion more like a single axon.
Definition
Unipolar Neurons
Term
What is the gap between nerve cells?
Definition
Synapse
Term
What is the space between neurons?
Definition
Synaptic Cleft
Term
At one end of a nerve. Portion of the presynaptic cell that contains and releases the neurotransmitter.
Definition
Presynaptic Terminal
Term
Portion of the postsynaptic cell that contains receptor sites and receives the neurotransmitter.
Definition
Postsynaptic Terminal
Term
Vessels that contain neurotransmitters.
Definition
Synaptic Vessels
Term
Groups of nerve cells that are bundled together.
Definition
Nerve Fibers
Term
Groups of nerve fibers that are bundled together, which is tissue that connects the nervous system with body parts or organs.
Definition
Nerve
Term
Controlling organ of the body and center of consciousness.
Definition
Brain
Term
Cerebrum, Cerebellum, and Brainstem.
Definition
3 Major Subdivions of the Brain
Term
The largest part of the brain and is sometimes called the "gray matter," makes up about 3/4 of the volume of the brain. Divided into left and right.
Definition
Cerebrum
Term
A deep ridge of nerve fibers that connects the hemispheres, seperated by a layer of dura mater.
Definition
Corpus Callosum
Term
Located underneath the great mass of cerebral tissue and is sometimes called the "little brain." Major function is to coordinate the various activities of the body, particularly body movements.
Definition
Cerebellum
Term
Brain appears to be sitting on this portion of the CNS as a plant sits on its stem. Most primitive part, lies deep within the cranium, and is best protected part of CNS. Controlling center for virtually all body functions that are absolutely necessary for life.
Definition
Brainstem
Term
Midbrain, pons, and medulla oblongata.
Definition
3 Ares of the Brainstem
Term
Located in the midbrain and responsible for maintenance of consciousness, specifically one's level of arousal.
Definition
Reticular Activating System
Term
Level of consciousness, reticular activating system, muscle tone, and posture.
Definition
Midbrain
Term
Respiratory patterning and depth.
Definition
Pons
Term
Heart rate, blood pressure, and respiratory rate.
Definition
Medulla Oblongata
Term
Extension of the brainstem. Contains nerve cell bodies, but the major portion is made up of nerve fibers that extend from the cells of the brain. Nerve fibers transmit information to and from the brain.
Definition
Spinal Cord
Term
What large hole at the base of the skull does the spinal cord exit through?
Definition
Foramen Magnum
Term
Created by an opening through the vertebra, stacked one on another.
Definition
Spinal Canal
Term
The muscle responds promptly, withdrawing the limb from the irritatiing stimulus even before this information can be transmitted to the brain.
Definition
Reflex Arc
Term
Occiptal Lobe, Parietal Lobe, Temporal Lobe, Frontal Lobe, Prefrontal Lobe, Limbic System, thalamus, and hypothalamus.
Definition
Subdivisions of the Brain
Term
Vision and storage of visual memories
Definition
Occipital Lobe
Term
Sense of touch and texture; storage of those memories.
Definition
Parietal Lobe
Term
Hearing, smell, and languag; storage of sound and odor memories.
Definition
Temporal Lobe
Term
Voluntary muscle control and storage of those memories.
Definition
Frontal Lobe
Term
Judgement and predicting conequences of actions, abstract intellectual functions.
Definition
Prefrontal Area
Term
Basic emotions, basic reflexes (chewing, swallowing, etc.)
Definition
Limbic System
Term
Emotions, temperature control, interface with endocrine system (hormone control).
Definition
Hypothalamus
Term
Relay center; filters important signals from routine signals.
Definition
Thalamus
Term
Brain to body parts; special peripheral nerves that connect directly to body parts.
Definition
Cranial Nerves
Term
Brain to spinal cord to body part; receive stimulus from body, sends commands to body.
Definition
Peripheral Nerves
Term
A set of 3 tough membranes, dura mater arachnoid, an pia mater, that encloses the entire brain and spinal cord.
Definition
Meninges
Term
The outermost of the 3 meninges that encloses the brain and it is the toughest.
Definition
Dura Mater
Term
The middle membrane of the 3 meninges that encloses the brain and spinal cord. Blood vessels appear like a spider web.
Definition
Arachnoid
Term
The innermost of the 3 meninges that encloses the brain and spinal cord; it rest directly on the brain and spinal cord.
Definition
Pia Mater
Term
Located between the pia mater and the arachnoid membrane.
Definition
Subarachnoid Space
Term
Manufactured in ventricles of the brain that flows in the subarachnoid space and bathes the meninges.
Definition
Cerebrospinal Fluid (CSF)
Term
Specialized hollow areas of the brain.
Definition
Ventricles
Term
Specialized capillaries within hollow areas in the ventricles of the brain that produce CSF.
Definition
Choroid Plexus
Term
Similar to plasma. Cushions and protects the brain and spinal cord.
Definition
CSF
Term
What are 2 portions of the Peripheal Nervous System?
Definition
Somatic and Autonomic
Term
What is the most common type of hemorrhge when there is trauma to the brain?
Definition
Subarachnoid Hemorrhage
Term
What are the 2 areas of the autonomic nervous system?
Definition
Sympathetic and Parasympathetic
Term
Responsible for the "fight-or-flight" response, enabling you to fight if you find yourself in a dangerous situation or to run away.
Definition
Sympathetic Nervous System
Term
Increases adrenaline to influence cardiovascular functions, norepinephrine to constrict peripheal blood vessels, and endorphins to increase pain tolerance. Shunting of blood from the skin and perihery to the vital organs, improved skeletal muscle strength and endurance, increasing the force and rate of the heartbeat, increased respirations, increased blood pressure, dialation of the pupils, and reduction of digestive system activity.
Definition
Response of the Sypathetic Nervous System
Term
Commonly referred to as the "feed and breed" functions. Generally slows down cardiovascular and respiratory functions.
Definition
Parasympathetic Nervous System
Term
Slowing the heart and respiratory rates, lowering the blood pressure, constricting the pupils, and increasing digestive system activity.
Definition
Response of the Parasympathetic Nervous System
Term
What are the 2 types of nerves in the Peripheral Nervous System?
Definition
Sensory and Motor Nerves
Term
Carry information from the body to the CNS.
Definition
Sensory Nerves
Term
Carry information from the CNS to the muscles of the body.
Definition
Motor Nerves
Term
Which are the only cranial nerves that do not exit through the brain stem?
Definition
Olfactory and Optic Nerves
Term
The 12 pairs of nerves that arise from the base of the brain.
Definition
Cranial Nerves
Term
Cranial nerves 1, 2, and 8
Definition
Sensory
Term
Cranial nerves 3, 4, 6, 11, and 12
Definition
Motor
Term
Cranial nerves 5, 7, 9, and 10
Definition
Motor and Sensory
Term
Provides the sense of smell.
Definition
Olfactory Nerve (1) I
Term
Provides the sense of vision.
Definition
Optic Nerve (2) II
Term
Innervates the muscles that cause motion of the eyeballs and upper lid. Carries parasympathetic nerve fibers that cause constriction of the pupils (sphincter muscle), and accommodation of the lens (ciliary muscle).
Definition
Oculomotor Nerve (3) III
Term
Innervates the superior oblique muscle of the eyeball, which allows a downward gaze.
Definition
Trochlear Nerve (4) IV
Term
Supplies sensation to the scalp, forehead, face, and lower jaw via 3 branches: the ophthalmic, maxillary, and mandibular divisions. Provides motor innervation to the muscles of mastication (Chewing), the throat, and the inner ear.
Definition
Trigeminal Nerve (5) V
Term
Supplies the lateral rectus muscle of the eyeball (lateral movement).
Definition
Abducens Nerve (6) VI
Term
Supplies motor activity to all muscles of facial expression, the sense of taste to the anterior 2/3 of the tongue, and cutaneous sensation to the external ear, tongue, and palate. Carries parasympathetic stimulation to the salivary glands, lacrimal glands, and the glands of the nasal cavity and palate.
Definition
Facial Nerve (7) VII
Term
Passes through the internal auditory meatus and provides the sense of hearing and balance.
Definition
Vestibulocochlear Nerve (8) VIII
Term
Supples the motor fibers to the pharyngeal muscles. Provides taste sensation to the posterior portion of the tongue and carries parasympathetic fibers to the salivery glands (paratid gland) located on each side of the face.
Definition
Glossopharyngeal Nerve (9) IX
Term
Provides motor functions to the soft palate, pharynx, and larynx (voice). Carries sensory fibers from the inferior pharynx, larynx, thoracic, and abdominal organs, taste bud fibers from the posterior tongue, and parasympathetic fibers to thoracic and abdominal organs.
Definition
Vagus Nerve (10) X
Term
Provides motor innervation to the muscles of the soft palate and the pharynx and to the sternocleidomastoid and trapezius muscles. Controls swallowing, speech, and head and shoulder movement.
Definition
Spinal Accessory Nerve (11) XI
Term
Provides motor function to the muscles of the tongue and throat.
Definition
Hypoglossal Nerve (12) XII
Term
Consists of 31 pairs of nerves arising bilaterally from between the vertebrae of the spine. Each pair is responsible for sending and receiving sensory and motor messages to and from the CNS from a portion of the body.
Definition
Spinal Nerves
Term
The area of the body served by a given nerve.
Definition
Dermatome
Term
Nerves that exit the spinal cord and follow similar tracts through the body.
Definition
Nerve Plexus
Term
Responsible for sending information about localized fine touch, pressure, vibration, an proprioception to the brain.
Definition
Posterior Column Pathway
Term
How are commands issued by the CNS are carried out.
Definition
Motor Pathways
Term
Sensations monitored throughout the body by receptors scattered throughout many different tissues.
Definition
General Senses
Term
Which receptor monitors for pain?
Definition
Nociceptors
Term
Which receptor monitors for temperature?
Definition
Thermorecptors
Term
Which receptor monitors the level of chemical found in the body?
Definition
Chemoreceptors
Term
Which receptor monitors for physical changes such as touch, pressure, and position?
Definition
Mechanoreceptors
Term
The largest organ of the human body and serves as the interface between the body and the outside world.
Definition
Skin
Term
The 2 parts of the skin.
Definition
Epidermis and Dermis
Term
Tissue, largely fat that lies directly under the dermis and serves as an insulator of the body.
Definition
Subcutaneous Tissue
Term
A watery substance that lubricates the openings of the body.
Definition
Mucus
Term
The most superficial layer of the skin and varies in thickness in different areas of the body.
Definition
Epidermis
Term
The thick skin covering the cranium, which usually bears hair.
Definition
Scalp
Term
The deepest layer of the epidermis where new skin cells are formed and gradually rise to the surface.
Definition
Germinal Layer or
Stratum basale/Stratum Germinativum
Term
How long does it take cells to get to the Stratum Corneal from the Germinal Layer?
Definition
About 4 weeks
Term
Outermost layer, contains dead cells and has no blood supply. Constantly rubbed away.
Definition
Stratum Corneal Layer
Term
Lies below the germinal layer of the skin. Contains sweat glands, sebaeous (oil) glands, nails, hair follicles, blood vessels, and specialized nerve endings.
Definition
Term
What gland is located along the hair shaft?
Definition
Sebaceous Gland
Term
The small organs that produce hair.
Definition
Hair Follicles
Term
The glands that secrete sweat, located in the dermal layer of the skin.
Definition
Sweat Glands
Term
What are the 2 type of sweat glands?
Definition
Merocrine and Apocrine Sweat Glands
Term
How many merocrine sweat glands does the adult skin contain?
Definition
2-5 million
Term
The predominant type of sweat glands, responding to body temperature, and are present at birth.
Definition
Merocrine Sweat Glands
Term
Sweat gland that becomes active at puberty, found mostly in armpit and groin, produce scent.
Definition
Apocrine Sweat Glands
Term
Which sweat gland includes the ceruminous gland of the external ear (produces earwax) and the mammary glands (produces breatmilk)?
Definition
Modified Sweat Glands
Term
Produces sebum, the oily material that seals the surface epidermal cells. Lies next to the hair follicle. Provides water proofing and keeps the skin soft so it does not crack.
Definition
Sebaceous Glands
Term
To protect the body in the environment, to regulate body temperature, and to transmit information from the environment to the brain.
Definition
3 Major Functions of Skin
Term
The mechanical and chemical breakdown of food and the absorbtion of resulting nutrients by the body's cells.
Definition
Digestion
Term
Extents from the mouth to the anus. Includes the mouth, pharynx, esophagus, stomach, small intestine, large intestine, rectum, and anus.
Definition
Alimentary Canal
Term
Mucosa (mucous membrane), Submucosa, Muscular layer, and Serosa (serous layer)
Definition
4 layers of the Alimentary Canal walls
Term
The Teeth, tongue, salivary glands, liver, gallbladder, and pancreas.
Definition
Alimentary Canal Accessary Organs
Term
The second major body cavity; it contains the major organs of digestion and excretion.
Definition
Abdomen
Term
Which quadrant contains the liver, gallbladder and a portion of the colon and small intestine?
Definition
Right Upper Quadrant (RUQ)
Term
Which quadrant contains the stomach, the spleen, and a portin of the colon and small intestine?
Definition
Left Upper Quadrant (LUQ)
Term
This quadrant contains 2 portions of the large intestine: the cecum and the acsending colon. It also contains the appendix. Appendicitis is a the most frequent cause of tenderness and pain in this region.
Definition
Right Lower Quadrant (RLQ)
Term
Which quadrant contains the descending and the sigmoid portions of the colon?
Definition
Left Lower Quadrant (LLQ)
Term
A small tubular structure that is attached to the lower border of the cecum in the lower right quadrant of the abdomen.
Definition
Appendix
Term
The first part of the large intestine, into which the ileum opens.
Definition
Cecum
Term
Behind the abdominal cavity.
Definition
Retroperitoneal
Term
Consist of the lips, cheek, gums, teeth, and tongue.
Definition
Mouth
Term
It is the bony plate lying anterior on the roof of the mouth.
Definition
Hard Palate
Term
A fold of mucous membrane and muscle that extends posteriorly from the hard palate into the throat.
Definition
Soft Palate
Term
The glands that produce saliva to keep the mouth and pharynx moist.
Definition
Salivary Glands
Term
How much saliva does the salivary glands produce daily?
Definition
Nearly 1.5 L
Term
Approximately 98% water and other 2% is mucus, salts, and organic compounds. Serves as a binder for the chewed food that is being swallowed.
Definition
Saliva
Term
Tubular structure that extends vertically from the back of the mouth to the esophagus and trachea.
Definition
Oropharynx
Term
A collapsible tube about 10" long that extends from the end of the pharynx to the stomach and lies just anterior to the spinal column in the chest.
Definition
Esophagus
Term
A hollow organ located in the left upper quadrant of the abdominal cavity, largely protected by the lower left ribs.
Definition
Stomach
Term
Approximatley how much gastric juice does the stomach produce daily?
Definition
1.5 L
Term
The name of the substance that leaves the stomach. It is a combination of all the eaten foods with added stomach acids.
Definition
Chyme
Term
How much pancreatic juice is secreted daily?
Definition
Nearly 2 L
Term
Where is insulin produce in the pancreas?
Definition
Islets of Langerhans
Term
A flat, solid organ that lies below the liver and the stomach; it is a major source of digestive enzymes and produces the hormone insulin.
Definition
Pancreas
Term
How much bile is made by the liver each day to assist with the normal digestion of fat?
Definition
Between .5 and 1L
Term
A large solid organ that lies in the right upper quadrant immediately below the diaphragm; it produces bile, stores glucose for immediate use by the body, and produces many substances the help regulate immune responses.
Definition
Liver
Term
Ordinarily, approximately how much of the cardiac output of blood passes through the liver each minute?
Definition
25% or 1.5 L
Term
About how much bile does the gallbladder usually contain?
Definition
60 to 90 mL
Term
The ducts that convey bile between the liver and the intestine.
Definition
Bile Ducts
Term
Outpouching from the bile ducts that serves as a reservoir and concentrating organ for bile produced in the liver.
Definition
Gallbladder
Term
The major hollow organ of the abdomen. Produce enzymes and mucus to aid in digestion.
Definition
Small Intestine
Term
Duodenum, the jejunum, and the ileum.
Definition
Small Intestine
Term
About 12" long, the part of the small intestine that receives food from the stomach.
Definition
Duodenum
Term
How long are the jejunum and ileum?
Definition
More than 20'
Term
Another major hollow organ which consist of the cecum, the colon, and the rectum. About 5' long, it encircles the outer border of the abdomen around the small bowel.
Definition
Large Intestine
Term
About how long is the large intestine?
Definition
5'
Term
Absorb the final 5 to 10% of digested food and water from the intestine to form solid stool, which is stored in the rectum and passed out of the body through the anus.
Definition
Major function of the Colon
Term
Inflammed colon.
Definition
Colitis
Term
Normal bacteria.
Definition
Intestinal Flora
Term
Tube 3 to 4" long that opens into the cecum (1st part of the large intestine) in the right lower quadrant of the abdomen that contains many bacteria.
Definition
Appendix
Term
Lowermost end of the colon, is a large, hollow organ that is adapted to store quantities of feces until it is expelled.
Definition
Rectum
Term
A 2" canal lined with skin at the terminal end of the rectum.
Definition
Anus
Term
Muscles arranged in circles that are able to decrease the diameter of tubes. Found within the rectum, bladder, and blood vessels.
Definition
Sphinters
Term
Materials enter the digestive tract via the mouth.
Definition
Ingestion
Term
Materials are crushed and broken into smaller fragments, making them easier to move through the digestive tract. Enzymes begin to attack the particles during chewing, as the teeth and tongue are used to tear and mash food.
Definition
Mechanical Processing
Term
The chemical breakdown of food into particles that are small enough to be absorbed by the digested epithelium. Simple molecules such as glucose are absorbed while others (polysccharides, proteins, triglycerides) must first be broken down before they can be absorbed.
Definition
Digestion
Term
Release of water, acids, buffers, enzymes, and salts by the epithelium and gladular organs of the digestive tract.
Definition
Secretion
Term
The movement of organic substrates (molecules acted on by enzymes), electrolytes, vitamins, and water across the epithelium of the digestive tract, into the interstitial fluid.
Definition
Absorption
Term
The removal of waste products from body fluids via secretions from the digestive tract and glandular organs; after mixing with residue that cannot be digested,these waste product become feces, which is eliminated during the process of defecation.
Definition
Excretion
Term
In normal routine activity, without any food or fluid ingestion at all: How much fluid is secreted daily into the gastrointestinal tract?
Definition
8-10 L
Term
How much of the body weight is delivere as fluid daily to the gastrointestinal tract?
Definition
7%
Term
Made up of various glands throughout the body. The complex message and control system that integrates many body functions, including the release of hormones.
Definition
Endocrine System
Term
Glands that secrete or release hormones, such as insulin, that are used inside the body.
Definition
Endocrine Gland
Term
Help regulate metabolism, controlling chemical reactions, transporting substances, regulating water and electrolyte balance, and aiding in reproduction, growth, and development.
Definition
Hormones
Term
Glands that secrete outside the body through ducts (tears) and include sweat glands.
Definition
Exocrine Glands
Term
Pituitary gland, thyroid gland, parathyroid glands, adrenal glands, pancreas, pineal gland, thymus gland, and reproductive glands.
Definition
Major Endocrine Glands
Term
Lipids made from arachidonic acid in cell membranes of the kidneys, heart, liver, lungs, pancreas, brain, reproductive organs, and thymus. They usually act more locally than hormones and are potent in small quantities.
Definition
Prostaglandins
Term
Stimulate hormone secretions and influence sodium and water movements in the kidneys, helping to regulate blood pressure.
Definition
Prostaglandins
Term
Molecules that bind to a cell's receptor and trigger a response by the cell; they produce some kind of action or biologic effect.
Definition
Agonists
Term
Molecules that bind to a cell's receptor and block the action of agonists. Widely used as drugs.
Definition
Antagonists
Term
Aldosterone, cortisol, estrogen, and testosterone. Derived from cholesterol
Definition
Steroids
Term
Epinephrine and norepinephrine. Derived from Amino Acids.
Definition
Amines
Term
Follicle-stimulating hormone (FSH), Luteinizing hormone (LH), and thyroid-stimulating hormone (TRH). Derived from Carbohydrates and Proteins.
Definition
Glycoproteins
Term
Antidiuretic hormone (ADH), oxytocin (OT), thyrotropin-releasing hormone (TRH). Derived from Amino Acids.
Definition
Peptides
Term
Growth hormone (GH), parathyroid hormone (PTH), prolactin (PRL). Dervied from Amino Acids.
Definition
Proteins
Term
Often referred to as the "master gland" because its secretions control the secretions of other endocrine glands. Located at the base of the brain and is about the size of a grape.
Definition
Pituitary Gland
Term
Small region of the brain (not a gland) that regulates the function of the pituitary gland. Primary link between the endocrine system and the nervous system.
Definition
Hypothalamus
Term
A large endocrine gland that is located at the base of the neck and produce and excretes hormones that influence growth, development, and metabolism.
Definition
Thyroid Gland
Term
What is the name of the clear substance that fills the thyroid gland?
Definition
Colloid
Term
Hormone secreted by the thyroid, though it is produced by extrafollicular cells rather than the follicular cells. Regulates concentrations of blood calcium and phosphate ions.
Definition
Calcitonin
Term
Embedded in the posterior portion of each lobe of the thyroid. Produce and secrete parathyroid hormone (PTH).
Definition
Parathyroid Gland
Term
Maintains normal levels of calcium in the blood and normal neuromuscular function.
Definition
Parathyroid Hormone (PTH)
Term
Organ of both the endocrine and digestive systems. Endocrine gland releasing the hormone insulin and glucagon. Exocrine secretes digestive juices.
Definition
Pancreas
Term
Cells located in the islet of Langerhans that secrete glucagon.
Definition
Alpha Cells
Term
Cells located in the islet of Langerhans that secrete insulin
Definition
Beta Cells
Term
A process that stimulates both the liver and the kidneys to produce glucose from noncarbohydrate molecules.
Definition
Gluconeogenesis
Term
The breakdown of glycogen to glucose.
Definition
Glycogenolysis
Term
A metabolic disorder in which the ability to metabolize carbohydrates (sugar) is impaired due to lack of insulin or failure of the cells to use insulin properly.
Definition
Diabetes Mellitus
Term
Abnormally high glucose level in the blood.
Definition
Hyperglycemia
Term
Abnormally low blood glucose level in the blood.
Definition
Hypoglycemia
Term
Cells in the pancreas that produce somatostatin.
Definition
Delt Cells
Term
Helps to regulate the endocrine system with a wide range of effects throughout the body.
Definition
Somatostatin
Term
Located on the top of each kidney. Manufacture and secrete certain sex hormones, as well as other hormones that are vital in maintaining the body's water and salt balance. Produce adrenaline.
Definition
Adrenal Glands
Term
Hormone produced by the adrenal glands that mediates the "fight-or-flight" response of the sympathetic nervous system; also called epinephrine.
Definition
Adrenaline
Term
Which part of the adreal glandsproduce epinephrine and norepinephrine?
Definition
Inner portion or medulla
Term
A glucocorticoid of the middle adrenal cortex that influences protein and fat metabolism and stimulates glucose to be synthesized from noncarbohydrates.
Definition
Cortisol
Term
What are the diseases of the adrenal cortex?
Definition
Cushing's Syndrome and Addison's Disease
Term
Reproductive glands and consists of the ovaries in women and testes in men.
Definition
Gonads
Term
The major androgen manufactured by the testes. Also is produced in small amounts in the adrenal glands and in the ovaries. Responsible for the development of male secondary sex characteristic, such as deep voice and facial hair.
Definition
Testosterone
Term
Female glands that produce sex hormones and ova (eggs)
Definition
Ovaries
Term
The male reproductive organs that produce sperm and secrete male hormones.
Definition
Testes
Term
Estrogen, progesterone, and human chorionic gonadotropin (hCG).
Definition
3 Major Female Hormones
Term
Functions in the menstrual cycle and in development of secondary sex characteristics, such as breast development in adolescence.
Definition
Estrogen
Term
Produced by the corpus luteum of the ovary, prepares the uterus for implantation of a fertiized egg.
Definition
Progesterone
Term
Known to help regulate the menstrual cycle in females and may play a role in regulating sperm production in the male.
Definition
Inhibin
Term
What type of organ are the ureters, bladder, and urethra?
Definition
Hollow
Term
What type of organ is the kidney?
Definition
Solid
Term
Controls the discharge of certain waste materials filtered from the blood by the kidneys.
Definition
Urinary System
Term
(1) To control fluid balance in the body. (2) To filter and eliminate waste, and (3) To control pH balance.
Definition
Functions of the Urinary System
Term
How much of the heart output of blood passes through the kidney's each minute?
Definition
Nearly 20%
Term
A cone-shaped collecting area that connects the ureter and the kidneys.
Definition
Renal Pelvis
Term
The inner portion of each kidney; it is made of conical renal pyramids, and has striations.
Definition
Renal Medulla
Term
The outer portion of each kidney; it forms renal columns and has tiny tubules associated with the nephrons.
Definition
Renal Cortex
Term
Functional units of the kidney's.
Definition
Nephrons
Term
Two retroperitoneal organs that excrete the end products of metabolism as urine and regulate the body's salt and water content.
Definition
Kidneys
Term
Supplies the kidney's with blood and arises from the abdominal aorta.
Definition
Renal Arteries
Term
What hormone helps to control red blood cell production?
Definition
Erythopoietin
Term
How much of the total cardiac output does the renal arteris carry into the kidneys, when the body is at rest?
Definition
Between 15 and 30%
Term
The final branches of the interlobular arteries of the kidneys; they lead to the nephrons.
Definition
Afferent Arterioles
Term
The vessel from the kidneys that joins the nferior vena cava.
Definition
Renal Veins
Term
How many nephrons are in a kidney?
Definition
About 1 million
Term
The initial blood-filtering component of the nephron.
Definition
Renal Corpuscle
Term
The portion of the nephron containing the tubular fluid filtered through the glomerulus.
Definition
Renal Tubule
Term
A tangled cluster of blood capillaries that comprise a renal corpuscle.
Definition
Glomerulus
Term
A sac-like structure that surrounds the glomerulus.
Definition
Glomerular Capsule
Term
Resist blood flow slightly and back up into the glomeruli, increasing glomerular capillary pressure.
Definition
Efferent Arteriole
Term
Efferent arterioles branch into complex, interconnected capillery networks.
Definition
Peritubular Capillary
Term
It is made up of enlarged smooth muscle cells along with the macula densa.
Definition
Juxtaglomerular Apparatus or Juxtaglomerular Complex
Term
Initiates urine formation.
Definition
Glomerular Filtration
Term
How many liters of fluid does glomerular filtration produce every 24 hours?
Definition
180 Liters
Term
Moves substances from the tubular fluid into the blood, within the peritubular capillary. The kidney reclaims the correct amounts of water, electrolytes, and glucose as required by the body.
Definition
Tubular Reabsorption
Term
Moves substances from the blood in the peritubular capillary into the renal tubule.
Definition
Tubular Secretion
Term
The final product of tubular reabsorption and secretion; it is a clear, yellow-colored fluid that carries waste out of the body.
Definition
Urine
Term
Mostly water, it has the same components of plasm except for large protein molecules; it is received by the glomerular capsule.
Definition
Glomerular Filtrate
Term
Usually positive pressure, it forces substances out of the glomerulus.
Definition
Net Filtration Process
Term
A result of amino acid catabolism, and its plasma concentration reflects the amount of protein in the diet. Filter into the renal tubule, with most being reabsorbed while the remaining excreted in urine.
Definition
Urea
Term
A result of metabolism of certain organic bases in nuclec acids. Active transport reaborbs most in the glomerular filtrate.
Definition
Uric Acid
Term
How much of urea is reabsorbed?
Definition
80%
Term
How much water is urine made up of?
Definition
About 95%
Term
What is the specific gravity of urine?
Definition
1.003-1.035
Term
How much urine is produced in a day?
Definition
Between .6 and 2.5 Liters
Term
What is considered normal urine production per hour?
Definition
50-60 mL
Term
Small muscular tubes that pass from the renal pelvis of each kidney along the surface of the posterior abdominal wall behind the peritoneum to drain into the urinary bladder.
Definition
Ureter
Term
A wave-like contraction of smooth muscle, occurs in the ureters to move the urine to the bladder.
Definition
Peristalsis
Term
How much blood circulates through the kidneys daily?
Definition
1500 L
Term
How much urine does a healty adult form every day?
Definition
1.5-2 L
Term
A sac behind the pubic symphysis made of smooth muscle that collects and stores urine.
Definition
Urinary Bladder
Term
The canal the conveys urine from the bladder to outside the body.
Definition
Urethra
Term
What is the range of total water content of the average adult?
Definition
50-70% Total Body Weight
Term
The process of maintaining homeostasis through equal intake and output of fluids.
Definition
Fluid Balance
Term
Exists within the cell.
Definition
Intracellular Fluid (ICF)
Term
What is the approximate pertcentage of total body weight that Intracellular Fluid makes up?
Definition
40-45%
Term
Exists outside the cell.
Definition
Extracellular Fluid (ECF)
Term
What is the approximate pertcentage of total body weight that Extracellular Fluid makes up?
Definition
15-20%
Term
The fluid portion of blood, is found within the blood vessels.
Definition
Intravascular Fluid (Plasma)
Term
What is the approximate pertcentage of total body weight that Intravascular Fluid makes up?
Definition
4.5%
Term
Located outside of the blood vessel, in the spaces between the body's cells.
Definition
Interstitial Fluid
Term
What is the approximate pertcentage of total body weight that Interstitial Fluid makes up?
Definition
10.5%
Term
Sex cells.
Definition
Gametes
Term
The reproductive system in males and females.
Definition
Genital System
Term
Male gametes.
Definition
Sperm
Term
Female gametes.
Definition
Oocytes or Eggs
Term
Cells that carry genetic instructions via 23 individual chromosomes.
Definition
Haploid Cells
Term
A chromosome of the same numbered pair from the opposite parent.
Definition
Homologous Chromosome
Term
The first fertilized cell, from which all other body cells are created.
Definition
Zygote
Term
Cells that carry 2 of each of the 23 chromosomes-one from the father and one from the mother.
Definition
Diploid
Term
The chromosomes that do not carry genes that determine sex.
Definition
Autosomes
Term
The X and Y chromosomes that determine sex.
Definition
Sex Chromosomes
Term
The arrangement of a person's genes and their characteristics is based on the combination of alleles, for one gene or many.
Definition
Genotype
Term
The appearance health condition, or other characteristics associated with a particular genotype.
Definition
Phenotype
Term
Variant forms of a gene, which can be identical or slightly different in DNA sequence.
Definition
Alleles
Term
A process that relases energy from organic compounds.
Definition
Cellular Respirations
Term
A process that involves a series of enzymatically catalyzed reactions in which glucose is broken down to yield lactic acid or pyruvic acid.
Definition
Glycolysis
Term
Process of maintaining homeostasis of temperature.
Definition
Thermoregulation
Term
Requring the presence of air or free oxygen.
Definition
Aerobic
Term
Living in the absense of air or free oxygen.
Definition
Anaerobic
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