g Define: physiology, homeostasis, dynamic constancy, variable, range. What are
ID: 50893 • Letter: G
Question
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Define: physiology, homeostasis, dynamic constancy, variable, range.
What are the four requirements for a feedback loop? Be able to explain their role in feedback loops.
What is a negative feedback loop? What is a positive feedback loop? Be able to give an example of each type of feedback loop. What is dynamic constancy?
Why are negative feedback loops preferentially used to maintain homeostasis?
Why are antagonistic feedback processes used for negative feedback loops?
Compare and contrast the two main regulatory mechanisms for homeostasis (endocrine and nervous systems).
Know the organ systems and their functions and the differences between exocrine and endocrine glands. This is more of a “keep these in mind” rather than something that will be tested on LE#1.
What is the Law of Mass Balance?
How is blood glucose regulated?
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Explanation / Answer
Physiology: Anatomy and Physiology is a branch of science, in which anatomy deals with the morphological structures various organs of the body and physiology deals with their functioning. Anatomy and physiology are completely interlinked, for example without spelling the name and composition of a bone (anatomy); we cannot explain its functions (physiology).
Homeostasis: Homeostasis is the maintenance of optimum condition of all the systems of the body, which is essential for their proper functioning.
Dynamic constancy: The physiological parametes keep changing, but their change always limitis within a set range that is maintained ny homeostatic mechanisms.
Variable: Variable is the one that changes from time to time, this change may be dependent or independent on other parameters.
Range: It is an interval between the lowest and heigest value of a given variable.
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