16 Thermoregulation-1

16 Thermoregulation-1 - RegulationofBodyTemperature 1. 2....

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Regulation of Body Temperature 1. Overview of Bioenergetics 2. Ectotherms vs. Endotherms 3. Mechanisms of Heat Exchange with the environment 4. Behavioral Thermoregulation 5. Physiological Mechanisms of Thermoregulation 6. The Role of the Hypothalamus
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O ve rvie w o f Ene rg e tic s 1. Mo s t c he m ic al re ac tio ns  in the   b o dy a re  e xo the rm ic 2. Bio c he m ic a l s ys te m s  a re  no t  te rribly e ffic ie nt at e ne rg y  tra ns fe r Therefore 3. At each conversion most of the  chemical energy appears as  heat (the rm al e ne rg y). 
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Q ua ntifying  Ene rg y The  a m o unt o f e ne rg y us e d pe r unit tim e  is   Metabolic Rate Bio lo g is ts  us ua lly m e a s ure  e ne rg y in  Calories   (No te : the  c o m m o n us e  o f the  wo rd c a lo rie   a c tua lly re fe rs  to  a  kilo c a lo rie ) The re  a re  a b o ut 5000 c a lo rie s /g ra m  in pro te in  a nd c a rb o hydra te  a nd a b o ut 9,000 c a lo rie s /g ra m   in fa t
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This note was uploaded on 11/12/2010 for the course BSCI BSCI 110B taught by Professor Johnson during the Spring '09 term at Vanderbilt.

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16 Thermoregulation-1 - RegulationofBodyTemperature 1. 2....

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