SET POINT - The normal value or range of values for a particular parameter. EX:The normal range of blood glucose concentration, MEASURING DEVICE - A device that checks if the level is in the range of the set point, RECEPTOR - Cell or group of cells that detects stimuli, STIMULI - Changes in the enviroment that can be detected by organisms, EFFECTORS - Parts of the body that respond to a stimulus, CONTROL - It is the response to a stimulus, HOMEOSTASIS - The maintenance of a costant internal enviroment , VASOCONSTRICTION - When the arterioles near the surface of the skin become narrower , a very little blood can flow and it releases not much heat., SECRETION - The process by which substances are produced and discharged by cells, VASODILATION - When the arterioles near the skin get wider , more blood floes near the surface and heat is lost into the air.,

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