UT Knoxville BCMB 230 - Physiology Notes 2012 (109 pages)

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Physiology Notes 2012



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Physiology Notes 2012

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Pages:
109
School:
University of Tennessee
Course:
Bcmb 230 - Human Physiology
Human Physiology Documents

Unformatted text preview:

Physiology Notes BCMB 240 Mark Alston Fall 2011 Course Intro Essay Questions will tell you what they are and can look over your answers Short Answers will give strong hints won t be on the same thing as the essay question Multiple Choice harder expect you to put concepts together Lab need close toed shoes and lab coat or scrubs Lecture Notes Physiology the study of how things work in the body the study of function Anatomy the study of structure There are several levels of Physiology small to big Molecular Cellular Tissue groups of cells working together Organ tissues working together Organ Systems Body Systems Homeostasis the tendency to maintain constant internal environment within a range around a setpoint Setpoint idealized value for some measurement where you can estimate from i e it will be somewhere close to but might change according to conditions ex pH body temperature Mechanisms for Maintaining Homeostasis 2 Need change in internal environment o Negative Feedback most important of the mechanisms in a physiological process the presence of the product inhibits the reaction ex Glucose plasma control o Positive Feedback in a physiological process the presence of the product accelerates the process ex Blood clotting Feed Forward anticipates a change in internal environment and meets that need o Usually are a learned response o Gets us ready to respond o Ex Salivation before eating Reflex automatic pre programmed response to a stimulus o Types Nervous Endocrine Local Etc o Can be acquired Components of a Reflex Stimulus require a stimulus to initiate o Internal o External Receptor receive detect stimulus goes to integrating center Integrating center processes information and sends instructions to the effector Effector acts on the information and instructions sent by the integrating center o Can fix things or stop them from getting worse Reflex Pathways Figure 1 8 Afferent approaches o Receptor detects stimulus integrating center processes information o



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