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15 Cards in this Set
- Front
- Back
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homeostasis
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The steady-state physiological condition of the body.
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thermoregulation
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The maintenance of internal temperature within a tolerable range.
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osmoregulation
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The control of water balance in organisms living in hypertonic, hypotonic, or terrestrial environments.
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excretion
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The disposal of nitrogen-containing waste products of metabolism.
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regulator
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A characterization of an animal in regard to a particular environmental variable. The animal is a regulator for that variable if it uses mechanisms of homeostasis to moderate internal change in the face of external fluctuation.
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conformer
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A characterization of an animal in regard to environmental variables. The animal is a conformer if it allows some conditions within its body to vary with certain external changes.
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budgets
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Used in reference to the gains and losses of various materials and energy. Most energy and materials budgets are interconnected, with changes in the flux of one component affecting the exchanges of other components.
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Q10 effect
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The phenomenon that the rates of most enzyme-mediated reactions increase by a factor of 2 to 3 for every 10° C temperature increase.
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conduction
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The direct transfer of thermal motion (heat) between molecules of objects in direct contact with each other.
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convection
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The mass movement of warmed air or liquid to or from the surface of a body or object.
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radiation
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The emission of electromagnetic waves by all objects warmer than absolute zero.
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evaporation
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The removal of heat energy from the surface of a liquid that is losing some of its molecules.
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ectotherm
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An animal, such as a reptile, fish, or amphibian, that must use environmental energy and behavioral adaptations to regulate its body temperature.
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endotherm
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An animal that uses metabolic energy to maintain a constant body temperature, such as a bird or mammal
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vasodilation
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An increase in the diameter of superficial blood vessels triggered by nerve signals that relax the muscles of the vessel walls.
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