Endothermy - Greater agility and speed—muscles that are...

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Endothermy Endothermy—the ability to physiologically maintain a constant body temperature A characteristic of birds and mammals (and probably dinos) Ectothermy—the inability to physiologically maintain a constant body temperature (though some sea animals can depending on the time of day) A characteristic of all other animals Outer temperature “cold blooded” Advantages of Endothermy Physiological consistency—an animals enzymes can be engineered to operate effectively at one temperature Physiological independence from the environment—animals internal environment more or less constant Extended activity in time and space—an animal can remain active at times and in places where it would otherwise not be able to
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Unformatted text preview: Greater agility and speed—muscles that are warm generate more power. Therefore animals that can maintain a constant body temperature are capable of greater activities without first warming up Disadvantages Endothermy requires using more energy to maintain a body temperature above that of the environment Endotherms typically must have some form of insulation and fat reserves Higher energy requirements necessitate more efficient circulatory and respiratory systems Endotherms must process their food more effectively so that they derive as much energy as possible from it. Many need to eat food with high energy content....
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This note was uploaded on 04/10/2008 for the course BIOL 2504 taught by Professor Bdopell during the Fall '07 term at Virginia Tech.

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Endothermy - Greater agility and speed—muscles that are...

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