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Pgs 1-12
Introduction to the Human Body
45
Other
Not Applicable
01/21/2011

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Term
Anatomy

"ana" = up ; "tomy"= process of cutting
Definition
the structure or study of the structure of the body and the relation of its parts to each other
Term
Dissection

"dis"=apart ; "section"=act of cutting
Definition
the careful cutting apart of body structures to study their relationship
Term
Physiology

"physio"= nature ; "logy"= study of
Definition
science that deals with the functions of an organism or its parts
Term
Atoms
Definition
unit of matter that makes up a chemical element and participate in chemical reactions
Term
Molecules
Definition
two or more atoms joined together

Ex: DNA and Glucose AKA Blood sugar
Term
Cells
Definition
the basic structural and functional unit of all organisms; the smallest structure capable of performing all the activities vital to life
Term
Tissue
Definition
a group of similar cells and their intercellular substance joined together to perform a specific function
Term
Organ
Definition
a structure composed of 2 or more different kinds of tissues with a specific function and usually a recognizable shape
Term
System
Definition

an association of organs that have a common function;

also called called organ -system level

Term
Organism
Definition
a total living form; one individual
Term
Catabolism
Definition

chemical reactions that break down complex compounds into simple ones with the net release of energy;

phase of metabolism;

decomposition

 

Term
Anabolism
Definition

Synthetic, energy-requiring reactions whereby small molecules are built up into larger ones;

phase of metabolism

 

Term
Metabolism
Definition
all the biochemical reactions that occur within an organism, including the synthetic (anabolic) and decomposition (catabolic) reactions; an important life process of human body
Term
Responsiveness
Definition
the body's ability to detect and respond to changes; an important life process of human body
Term
Movement
Definition

motion of the whole body, individual organs, single cells, and even tiny structures inside cells;

an important life process of human body

Term
Growth
Definition
an increase in size due to an increase in the number of cells, the size of existing cells as internal components increase in size or the size of intercellular substances; an important life process of human body
Term
Differentiation
Definition
development of a cell from an un-specialized to a specialized state

Ex: a fertilized egg to an embryo, fetus, infant, child and finally adult
Term
Reproduction
Definition
the formation of new cells for growth, repair, or replacement; also the production of a new individual
Term
Body Fluids
Definition
dilute watery solutions containing dissolved chemicals that are found inside cells as well as surrounding them.
Term
Intracellular (ICF)

"intra" = inside
Definition
fluid located within cells
Term
Extracellular  Fluid (ECF)

"extra" = outside
Definition
fluid outside body cells, such as interstitial fluid and plasma Ex: lymph, cerebrospinal fluid, synovial fluid
Term
Interstitial Fluid

"inter" = between
Definition
The portion of extracellular fluid that fills the narrow or microscopic spaces between cells of tissues; the internal environment of the body AKA intercellular/tissue fluid
Term
Feedback Systems or Feedback Loop
Definition
a cycle of events in which the status of a body condition is monitored, evaluated, changed, re-monitored, reevaluated, and so on
Term
Receptor
Definition
a specialized cell or body structure that monitors and responds to a specific sensory modality or change and converts to an electrical signal
Term
Control Center
Definition
sets the range of values within which a controlled condition should be maintained, evaluates the input it receives from receptors, and generates output commands when they are needed.
Term
Effector
Definition
an organ or body structure that receives output from the control center and produces a response or effect through somatic or autonomic motor neurons
Term
Disorder
Definition
an abnormality of structure or function
Term
Disease
Definition
any change from a state of health; specific term for an illness characterized by a recognizable set of signs and symptoms
Term
Symptoms
Definition
subjective changes in body functions that are not apparent to an observer

Ex: headache, nausea, anxiety
Term
Signs
Definition
objective changes that a clinician can observe and measure anatomically or physiologically

Ex: anatomically-swelling, rash
Physiology- fever, blood pressure
Term
Homeostasis
Definition
the condition of equilibrium (balance) in the body's internal environment due to the constant interaction of the body's many regulatory processes
Term
Negative Feedback
Definition
change in a controlled condition that helps to stabilize as in the regulation of blood pressure
Term
Positive Feedback
Definition

•Strengthens or reinforces a change in the body’s controlled conditions

  • continues to strengthen initial change until it’s interrupted by some mechanism
Term
Autopsy
Definition
postmortem (after death) examination of the body and dissection of its internal organs to confirm or determine the cause of death.
Term
Epidemiology

"epi" = upon ; "demi" = people
Definition
science that deals with why, when,and where diseases occur and how they are transmitted among individuals in a community
Term
Pharmacology

"pharmac" = drug
Definition
the science that deals with the effects and uses of drugs in the treatment of disease
Term
Diagnosis
Definition
science and skill of distinguishing one disorder or disease from another
Term
Blood Plasma
Definition
ECF within blood vessels
Term
Lymph
Definition
fluid found within lymphatic vessels
Term
Cerebrospinal Fluid
Definition
fluid in and around the brain and spinal cord
Term
Synovial Fluid
Definition
fluid in joints
Term
Aqueous Humor & Vitreous Body
Definition
the ECF of the eyes
Term
Controlled Condition
Definition
each monitored variable, such as body temperature, blood pressure, or blood glucose level
Term
Stimulus
Definition
any disruption that changes a controlled condition
Term
Barorecptors
Definition
pressure-sensitive nerve cells located in the walls of certain blood vessels, detect the higher pressure
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