| anterior hypothalamus | the anterior portion of the hypothalamus. The hypothalamus is an area of the brain below the thalamus that regulates the autonomic nervous system and the pituitary gland.
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| conduction | transfer of heat from warmer to cooler objects that are in contact with each other. This term may also be used in association with the conveyance of neural impulses.
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| convection | the transmission of heat from one object to another through the circulation of heated molecules.
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| evaporation | the change of water from a liquid form to a vapor form. Results in the removal of heat.
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| homeotherms | animals that maintain a fairly constant internal temperature.
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| hyperthermia | an above-normal increase in body temperature.
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| hypothermia | a condition in which heat is lost from the body faster than it is produced.
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| posterior hypothalamus | area of the brain responsible for regulation of the body's response to a decrease in temperature.
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| radiation | process of energy exchange from the surface of one object to the surface of another that is dependent on a temperature gradient but does not require contact between the objects; an example is the transfer of heat from the sun to the earth.
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