Balancing Heat Loss and Gain

Balancing Heat Loss and Gain - b) Vasodilatation – the...

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AP Biology Balancing Heat Loss and Gain - Three Features in the way where all vertebrates control their body temperatures a) A source of heat for the body b) A way to conserve that heat c) A method of eliminating excess heat when necessary 1) Insulation = The process of keeping “heat” inside of the body. a) In other animals – Brown fats, hair, feathers, or fat layers (adipose tissues)… b) In terrestrial mammals – Integumentary system (AKA skin) c) In marine mammals - blubber 2) Circulatory Adaptations (Blood flow) a) Vasoconstriction – the process of reducing blood flow and heat transfer by decreasing blood vessels
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Unformatted text preview: b) Vasodilatation – the process of increasing blood flow and heat transfer by increasing blood vessels 3) Countercurrent heat exchange a) Heat is trapped (saved) in side of the core of the body b) Therefore, the organisms are resistant to the extremely harsh environment – such as cold temperature. c) In addition, the heats are being transferred inside of the body rather than being exposed to the environment. (Between vein and artery) 4) Cooling – evaporation – such as panting or spreading silvia 5) Other Behavioral responses – bathing into the water, and etc…...
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This note was uploaded on 02/11/2012 for the course ZOOLOGY 152 taught by Professor Stephengammie during the Fall '11 term at University of Wisconsin.

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