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Human Biology (Mader) 10th Edition Chapter 4
Boldface words and their definitions.
88
Biology
Undergraduate 1
10/25/2009

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Term
Acne
Definition
Inflammation of the sebaceous glands
Term
Adipose tissue
Definition
is a type of loose connective tissue in which cells enlarge and store fat.
Term
Collagen Fibers
Definition
contains collagen, a protein that gives flexibility and strength.
Term
Connective Tissue
Definition
binds and supports body parts.
Term
Dense fibrous connective tissues
Definition
contain many collagen fibers that are packed closely together.
Term
Elastic cartilage
Definition
has more elastic fibers that Hyaline cartilage.
Term
Elastic fibers
Definition
contain elastin, a protein that is not as strong as collagen but is more elastic.
Term
Epithelial tissue
Definition
covers the body surfaces and lines the body.
Term
Fibroblasts
Definition
cells that are in loose fibrous and dense fibrous connective tissue.
Term
Fibrocartilage
Definition
contains strong collagen fibers.
Term
Hyaline Cartilage
Definition
Contains only very fine collagen fibers, and a translucent and glassy appearance.
Term
Loose fibrous connective tissue
Definition
support the epithelium and many internal organs.
Term
Muscular Tissue
Definition
moves the body and its parts
Term
Nervous tissue
Definition
receives stimuli and conducts nerves impulses.
Term
Reticular fibers
Definition
Very thin collagen fibers that are highly branched and form a supporting network.
Term
Tendons
Definition
connect muscles to bones
Term
Tissue
Definition
specialized cells of the same type that perform a common function in the body.
Term
adhesion junction
Definition
junction between cells in which the adjacent plasma membranes do not touch but are held together by intercellular filaments attached to buttonlike thickenings.
Term
basement membrane
Definition
layer of nonliving material that anchors epithelial tissue to underlying connective tissue.
Term
blood
Definition
Type of connective tissue in which cells are separated by a liquid called plasma.
Term
bone
Definition
Connective tissue having protein fibers and a hard matrix of inorganic salts, notably calcium salts.
Term
cardiac muscle
Definition
Striated, involuntary muscle found only in the heart.
Term
cardiovascular system
Definition
Organ system in which blood vessels distribute blood powered by the pumping action of the heart.
Term
cartilage
Definition
connective tissue in which the cells lie within Lacunae separated by a flexible protienaceous membrane
Term
columnar epithelium
Definition
Type of epithelial tissue with cylindrical cells.
Term
compact bone
Definition
type of bone that contains osteons consisting of concentric layers of matrix and osteocytes.
Term
cuboidal epithelium
Definition
Type of epithelial tissue with cube-shaped cells.
Term
dermis
Definition
Region of skin that lies beneath the epidermis.
Term
diaphragm
Definition
Dome-shaped horizontal sheet of muscle and connective tissue that divides the thoracic cavity from the abdominal cavity.
Term
digestive system
Definition
Organ system including the mouth, esophagus, stomach, small intestine, and colon that receives food and digests it into nutrient molecules
Term
endocrine gland
Definition
Ductless organ that secrets hormones into the bloodstream.
Term
endocrine system
Definition
Organ system involved in the coordination of body activities; uses hormones as chemical signals secreted into the bloodstream.
Term
epidermis
Definition
Region of skin that lies above the dermis.
Term
exocrine gland
Definition
Gland that secrets its product to an epithelial surface directly or through ducts.
Term
gap junction
Definition
Junction between cells formed by the joining of two adjacent plasma membranes; it lends strength and allows Ions, sugars, and small molecules to pass between cells.
Term
gland
Definition
Epithelial cell or group of epithelial cells that are specialized to secrete a substance.
Term
hair follicle
Definition
Tubelike depression in the skin in which a hair develops.
Term
homeostasis
Definition
Maintenance of normal internal conditions in a cell or an organism by means of self regulating mechanisms.
Term
immune system
Definition
White blood cells and lymphatic organs that protect the body against foreign organisms and substances and also cancerous cells.
Term
integumentary system
Definition
Organ System consisting of skin and various organs, such as hair, that are found in skin.
Term
intercalated disks
Definition
Region that holds adjacent cardiac muscle cells together; disks appear as dense bands at right angles to muscular striations.
Term
lacuna
Definition
small pit or hollow cavity, as in bone or cartilage, where a cell or cells are located.
Term
langerhans cell
Definition
Specialized epidermal cells that assist the immune system
Term
ligaments
Definition
connect bones to other bones at the joints.
Term
lymph
Definition
fluid, derived from tissue fluid, that is carried in lymphatic vessels.
Term
lymphatic system
Definition
Organ system consisting of lymphatic vessels and lymphatic organs that transport lymph and lipids, and aids the immune system.
Term
matrix
Definition
Unstructured semifluid substance that fills the space between cells in connectinve tissues or inside organelles.
Term
melanocyte
Definition
Melanin-producing cell found in skin.
Term
meninges
Definition
protective membranous coverings about the central nervous system.
Term
meningitis
Definition
Condition that refers to inflammation of the brain or spinal cord meninges (membranes)
Term
mucous membrane
Definition
membrane lining a cavity or tube that opens to the outide of the of the body; also called mucosa.
Term
muscular system
Definition
system of muscles that produces movement, both within the body and of its limbs; principal components are skeletal, smooth, and cardiac muscle.
Term
nail
Definition
Protective covering of the distal part of the fingers and toes.
Term
negative feedback
Definition
Mechanism of homeostatic response in which a stimulus initiates reactions that reduce the stimulus.
Term
nerve
Definition
Bundles of long axons outside the central nervous system
Term
nervous system
Definition
Organ system consisting of the brain, spinal cord, and associated nerves that coordinates the other organ systems of the body.
Term
neuroglia
Definition
nonconducting nerve cells that are intimately associated with neurons and function in a supportive capacity.
Term
neuron
Definition
Nerve cell that characteristically has three parts: dendrites, cell body, and axon.
Term
oil gland
Definition
Glands of the skin associated with the hair follicle; secrets sebum; also called sebaceous gland.
Term
organ
Definition
Combination of two or more different tissues preforming a common function.
Term
organ system
Definition
Group of related organs working together.
Term
pathogen
Definition
Disease-causing agent.
Term
peritonitis
Definition
Generalized infection of the lining of the abdominal cavity.
Term
platelet (thrombocyte)
Definition
Component of blood necessary to blood clotting.
Term
pleura
Definition
Serous membrane that encloses the lungs.
Term
positive feedback
Definition
Mechanism in which the stimulus initiates reactions that lead to an increase in stimulus.
Term
pseudostratified columnar epithelium
Definition
Appearance of layering in some epithelial cells when, actually, each cell touches a baseline and true layers do not exist.
Term
red blood cell (erythrocyte)
Definition
Formed element that contains hemoglobin and carries oxygen from the lungs to the lung to the tissues; also called erythrocyte.
Term
reproductive system
Definition
Organ system that contains male or female reproductive organs and specializes in the production of offspring.
Term
respiratory system
Definition
Organ system consisting of the lungs and tubes that bring oxygen into the lungs and take carbon dioxide out.
Term
reticular fiber
Definition
Very thin collagen fibers in the matrix of connective tissues, highly branched and forming delicate support networks.
Term
serous membrane
Definition
Membrane that covers internal organs and lines cavities without an opening to the outside of the body; also called serosa
Term
skeletal muscle
Definition
Striated, voluntary muscle tissue found in muscles that move the bones.
Term
skeletal system
Definition
System of bones, cartilage, and ligaments that works with the muscular system to protect the body and provide support for locomotion and movement.
Term
skin
Definition
Outer covering of the body; also called integumentary system.
Term
smooth muscle
Definition
Non-striated, involuntary muscle tissue found in the walls of internal organs.
Term
spongy bone
Definition
Porous bone found at the ends of long bones where red bone marrow is sometimes located.
Term
squamous epithelium
Definition
Type of epithelial tissue that contains flat cells.
Term
striated
Definition
Having bands
Term
subcutaneous layer
Definition
Tissue layer that lies just below the skin and contains adipose tissue.
Term
sweat gland
Definition
Skin gland that secretes a fluid substance for evaporative cooling; sudoriferous gland.
Term
synovial membrane
Definition
Membrane that forms the inner lining of the capsule of a freely movable joint.
Term
tight junction
Definition
Junction between cells when adjacent plasma membrane proteins join to form an impermeable barrier.
Term
tissue fluid
Definition
Fluid that surrounds the bodies cells; consists of dissolved substances that leave the blood capillaries by filtration and diffusion.
Term
urinary system
Definition
Organ system consisting of kidneys and urinary bladder; rids the body of nitrogenous wastes and helps regulate water-salt balance of the blood.
Term
vitamin D
Definition
Required for proper bone growth.
Term
white blood cell (leukocyte)
Definition
Type of blood cell that is transparent without staining and protects the body from invasion by foreign substances and organisms; also called a leukocyte.
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