Physiology 2130 Study Guide - Midterm Guide: Extracellular Fluid, Negative Feedback, Positive Feedback

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Module 1- introduction to physiology: physiology is the study of function in living organisms. a) It explains how organisms control their internal environment despite what happens outside: physiology also explains the physical/chemical factors responsible for both normal function and disease. Mr. anderson showing us what interstitial fluid is all about. The external environment is the region outside our body. *** this also includes the space and contents of the following: digestive tract, respiratory tract, urogenital tract. As seen, the contents of the digestive, respiratory and urogenital tracts are all considered a part of the external environment. external environment. This is because they are brought into your body from the: the body maintains homeostasis by using positive and negative feedback loops. Negative feedback loops: negative feedback loops contain a) a set point b) a sensor c) control. Centre d) effector e) controlled variable: negative feedback loops work to stabilize around the set point.