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Exercise Chapter 2
Control of the Internal Environment
7
Medical
Undergraduate 3
09/15/2010

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Cards

Term
Line graph
Definition
-graph used to illustrate relationship between two variables
Term
Independent variable
Definition
-variable placed on the x-axis (horizontal)
-manipulated by researcher
Term
Dependent variable
Definition
-variable placed on the y-axis (vertical)
-changes as a function of the independent variable
Term
Homeostasis
Definition
-the maintenance of a constant and "normal" internal environment
Term
Steady state
Definition
-a physiological variable that is unchanging but not necessarily "normal"
-Balance between demands placed on body and the body’s response to those demands
-Ex: Body temperature, arterial blood pressure
Term
biological control system
Definition
Series of interconnected components that maintain a physical or chemical parameter at a near constant value
Term
sensor or receptor
Definition
-component of biological control system
-detects changes in variable
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