Homeostasi1 - Homeostasis the maintenance of internal...

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Homeostasis – the maintenance of internal conditions within normal limits Homeostatic Control Mechanisms: Receptors sense changes or stimuli in the information along an efferent pathway to an effector (muscle, gland) that effects a response. Negative Feedback: the product or response shuts off or reduces the level of the original stimulus; the variable then changes in a direction opposite the initial change Examples of negative feedback mechanisms : regulation of body temperature, the Positive Feedback – the product or response enhances or exaggerates the original stimulus such that the response is continued Examples of positive feedback mechanisms : blood clotting, labor contractions during birth Homeostatic Imbalance – some lack of ability to activate or carry out control
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This note was uploaded on 12/04/2011 for the course ANTHRO 2000 taught by Professor Monicaoyola during the Fall '10 term at Broward College.

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