Chapter 1 Vocab Flashcards
Anatomy
The study of the structure and shape of the body and body parts and relationship to on another.
Physiology
The study of how the body and its parts work or function.
Cell
The smallest units of all living things.
Tissue
These consists of groups of similar cells that have a common function.
Organ
Is the structure that is composed of two or more tissues types and performs a specifc function of the body.
Organ System
A group of organs that cooperate to accomplish a common purpose.
Organism
Which represents the highest level of structural organization the organismal level.
Metabolism
Refers to all chemical reactions that occur within body cells.
Homeostasis
Survival organism in the ecosystem.
Negative-feedback mechanisms
When some function of the output system process or feeds back in a manner that tends to reduce the fluctuation.
Receptor
The first component.
Control Center
Determines the level at which a variable is to be maintained analyze the information it receives.
Effector
The third component which provides the mean for the control centers response.
Positive-feedback mechanism
These tend to increase the original disturbance and to push the variable farther from its original place. These are rare in the body.
Anatomical Position
The body is in a standard position.