生理学笔记幻灯片.ppt

2. Feed-forward Control Controlling System Controlled System control signal output variable Definition: Controlling system send feed-forward signal to controlled system to regulate its activities through other way before the variation of output variable. Significance: to avoid possible variation of the output variable Feed-forward signal disturbing signal output variable Sensor receptor Summary Physiology is to study all of the life activities of living organisms on the three leves Internal Environment is the actual enviroment in which cells of body live directly----extracellular fluid, ECF Homeostasis is relatively constant state of physical and chemical properties of internal environment Main types of regulation on physiological function are nervous regulation, humoral regulation and autoregulation Negative feedback is to keep functional activities being constant What are internal environment and its characteristic What are reflex and its structural basis What are physiology and levels of physiological study Problems: What are nervous regulation and humoral regulation and their properties What are homeostasis and its its significance What are negative feedback and the significance of this regulating mechanism How is homeostasis maintained in the body thermostat Example of Negative Feedback the thermostat RT below set point Furnace + Through Connecting circuit _ Heat output raises RT to set point * At first, welcome you to have this class, totally, 4 teachers are responsible for this class, I have just the first one. All of us will do our best to work hard. To improve your speciality, we’ll try to give lecture in English as possible as. But, you should understand that we are not English teacher, The importantce for me is to just help you to grasp knowledge of physiology nut not only learn English. On the other hand