9 Homeostasis - Homeostasis Homeostasis is the dynamic...

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Homeostasis Homeostasis is the dynamic constancy of the internal environment Conditions fluctuate continuously within narrow limits Homeostasis is essential for life
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Humans, like other mammals, are endothermic They maintain a body temperature of 37 o C (98 o F) The hypothalamus coordinates the regulation of the body temperature When body temperature rises Heat is dissipated via sweating and dilation of skin blood vessels When body temperature drops Heat is conserved via shivering and constriction of skin blood vessels Regulating Body Temperature
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Blood glucose levels are monitored by the Islets of Langerhans in the pancreas Regulating Blood Glucose When levels are high, insulin is released When levels are low, glucagon is released Stimulate glycogen breakdown
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Catabolism produces nitrogenous wastes that must be eliminated from the body The first by-product is ammonia, which is toxic It is released through the gills of bony fish
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This note was uploaded on 03/10/2008 for the course BIO 110 taught by Professor N/a during the Spring '08 term at Cal Poly Pomona.

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9 Homeostasis - Homeostasis Homeostasis is the dynamic...

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