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SLCC Physiology Lab 1 Questions and Answers 2024
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SLCC Physiology Lab 1
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SLCC Physiology Lab 1Homeostasis - answer maintenance of relatively constant conditions within the body's
internal environment
Steady State - answer occurs when regulated variables, such as BP, pH, glucose
concentration, and body temp., fluctuate about a set point or within a set range
Set Point & Set Range - answer_______ and ______ for a variable can be changed by
the body as environmental conditions change. For example, the S.R. for a resting heart
rate is very different than the heart rate S.R during exercise
Negative Feedback - answerA type of feedback commonly employed in homeostatic
regulatory systems in which the response of a system goes in a direction opposite to the
change that set it in motion
Positive Feedback - answerA type of feedback in which the response of a system goes
in the same direction as the change that set it in motion (ex. childbirth)
Sensors - answerA negative feedback mechanism; often neurons or receptors that
monitor the variable
Set Point - answerthe normal or desired value of the regulated variable in a homeostatic
regulatory system
Effectors - answercells, tissues, or organs that respond to neural or chemical signals; in
homeostatic regulatory systems, cells, tissues, or organs that respond to output signals
of the integrating center and bring about the final response; also called effector organs
Antagonistic Effectors - answereffectors that compliment other effectors actions to
maintain homeostasis; Body Temp. Ex: some of the effectors will act to increase the
core body temp. while other will act to decrease the core body temp.
Feed-Forward Mechanisms - answerAids in maintenance of homeostasis; allow the
body to anticipate change in a variable and to prepare for that change so that it is as
small as possible
Amplification Cascade - answerType of positive feedback where each step is larger
than the previous step; the purpose of this process is to cause a change in the body
Independent Variable - answer
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