PNB 2274 Study Guide - Final Guide: Brown Adipose Tissue, Myoclonic Epilepsy, Adipose Tissue
17 Jan 2018
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Document Summary
Homeostasis : the tendency of an organism to maintain a stable internal environment even though the external environment changes continuously. Enables body to survive in diverse environments. Homeostatic control systems: mechanisms that monitor the internal environment and correct as needed. Cellular level local control - isolated change in a few cells or a tissue, response emerges and acts locally. Organ and whole-organism level reflex control - long-distance signaling, typically involving endocrine or neural responses. They possess a set point within a normal range. Respond to correct error by controlling the target effector. Feedback : the process in which soe part of the output of a system is returned to its input in order to regulate its further output! Negative feedback loops when the output of a system acts to oppose changes to the input of the system. Help maintain homeostasis, shut off the original input.
