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10 Cards in this Set
- Front
- Back
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Homeostasis |
Maintenance of a steady internal envt, despite changes in ext envt to ensure that biochemical rxns can take place. |
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Ectotherms |
Organisms that derive body heat from external envt (sun, etc) |
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Endotherms |
Organisms that derive body heat from metabolism |
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Thermoregulation |
Process by which animals maintain an int temperature w/in tolerable range - necessary for biochemical reactions as enzymes lose activity. |
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Temperature vs Heat |
Temperature is a non size specific measure of motion of atoms in a substance, while heat is a size specific measure of energy content of a body. |
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Integumentary system |
Refers to outer covering, such as skin, nails and hair. (impt here is BLUBBER) |
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Insulation |
An adaptation by animals that live in env colder than their core body temp (^temp diff, ^ rate at which heat is lost) |
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Hair/Feathers - Adaptation |
Traps a layer of air near skin, preventing air from flowing and removing heat away from skin. |
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Blubber |
serves as a layer of insulation to reduce heat loss |
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Shivering |
Shivering involves the involuntary contraction and relaxation of muscle tissues, thus allowing for the production of metabolic heat. |
