BIO120H1 Lecture Notes - Lecture 15: Weasel, Dimetrodon, Fruit Preserves
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BIO120H1 Full Course Notes
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Lecture 15: physiological ecology of animals heat. We"re going to focus on vertebrates that are homeotherms birds and mammals that maintain a constant body temperature. Heat exchange involves heat going from small things to larger things. Radiant heat we have quite an interestingly high ability of radiant potential. Conduction transfer by direct contact with substrate (e. g. , feet lose heat to ground) Hot piece of metal on cold piece of metal, direct transfer of heat based on contact between the two. Convection heat transfer mediated by moving fluid (usually air or water) Making this transfer work to an animal"s advantage requires . If there"s evaporative cool, it"s much more effective than when it"s dry. Water has a high heat vaporization, takes a lot of calories to turn water into a gas. Redistribution circulatory system redistributes heat among body parts, especially core to appendages.
