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Anatomy and Physiology I
Chapter 1 Vocab
26
Science
Undergraduate 2
06/16/2009

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Term
Anatomy
Definition
Study of the structure of living organisms
Term
Physiology
Definition
Study of the function of living oraganisms
Term
Gross/Macroscopic Anatomy
Definition

The study of large body structures visible to the naked eye.

Ex. the heart, lungs, kidneys.

Term
Microscopic Anatomy
Definition

Study of the structures too small to be seen with the naked eye.

Ex. Histology

Term
Cytology
Definition
Study of the cells of the body.
Term
Histology
Definition
The study of tissues.
Term
Principle of Complementarity
Definition
The principle that states what a structure can do depends on its specific form.
Term
Atoms
Definition
Smallest particles of an elemental substance that exhibits the properties of that element; composed of protons, neutrons, and electrons.
Term
Molecules
Definition
Particles consisting of two or more atoms joined together by chemical bonds.
Term
Cells
Definition
Structural units of all living things.
Term
Tissues
Definition
Groups of similar cells that have a common function.
Term
Organ
Definition
A discrete structure composed of at least two tissue types that perform a specific function for the body.
Term
Organ System
Definition
Organs that work together to accomplish a common purpose.
Term
Homeostasis
Definition
A state of body equilibrium or stable internal environment of the body.
Term
Variable
Definition
The factor or event being regulated.
Term
Receptor
Definition
A type of sensor that monitors the environment and responds to changes by sending information to the control center.
Term
Control Center
Definition
One of the three interdependent components of homeostatic control mechanisms; determines the set point.
Term
Effector
Definition
Provides the means for the control center's response to the stimulus.
Term
Negative Feedback Mechanisms
Definition
The most common homeostatic control mechanism. The net effect is that the output of the system shuts off the original stimulus or reduces its intensity.
Term
Positive Feedback Mechanisms
Definition
Feedback that tends to cause the level of a variable to change in the same direction as an initial change.
Term
Axial Part
Definition
Makes up the axis of our body. Includes the head, neck, and trunk.
Term
Appendicular Part
Definition
Consists of the appendages which are attached to the body's axis.
Term
Serous Membrane
Definition
The thin double-layered membrane that covers the walls of the ventral body cavity and the outer surfaces of the organs it contains.
Term
Parietal Serosa
Definition
The part of the membrane lining the cavity walls.
Term
Visceral Serosa
Definition
The part of the membrane that covers the organs in the cavity.
Term
Serous Fluid
Definition
The fluid that separates the serous membranes.
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