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Unformatted text preview: THERMO-REGULATION – Chapter 12 12/04/07 Reproduction – growing a fetus in the body requires more energy than maintenance Excess energy is stored in the body for later use Metabolic Rate = the amount of energy that an animal uses in a given time period Smaller animals – higher metabolic rate The higher the metabolic rate = the more energy it takes to maintain that animal Example: mouse vs. elephant • Respirometer = a machine that measures how much oxygen an animal is taking in • Homeothermic = an animal that maintains a constant body temperature (warm- blooded) • Ectothermic = an animal that obtains their heat from external sources • Endothermic = an animal that generates heat internally • Poikilothermic = an animal whose temperature fluctuates (cold-blooded) Average Rectal Temperatures Table 12.1 in book • Cat = 101.5 o F • Dog = 102 o F • Pig = 102.5 o F • Sheep = 102.3 o F • Dairy Cow = 101.5Dairy Cow = 101....
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- Spring '08
- metabolic rate