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endotherm |
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endotherm‘Warm-blooded’, or homeothermic, animal. Endotherms have internal mechanisms for regulating their body temperatures to levels different from the environmental temperature. See homeothermy. |
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It is possible that the branch of reptiles that became mammals transduced sound in this fashion the entire time, and that competition for the function of these three bones did not occur until the advent of endothermy and the subsequent need for more rapid food processing. While high blood pressure is correlated with endothermy in birds and mammals, it would also be essential in a large animal with a long neck (as in many dinosaurs) for blood to be delivered to the brain, whatever the metabolism of the animal. Their presence in a fossil animal signals endothermy, say the researchers (SN: 5/14/94, p. |
endothermy
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