BIOA02H3 Lecture Notes - Lecture 21: Homeothermy, Heterothermy, Poikilotherm

• School: UTSC
• Department: Biological Sciences
• Course: BIOA02H3
• Professor: Ivana Stehlik

Document Summary

Conduction + convection + radiation are known as dry heat transfer the rate of dry heat transfer is proportional to t (body) - t (ambient) Categories of thermal relations the fish is poikilothermic + homeothermic they body temperature is constant! But their body temperature fluctuates with the environment this happens because they usually live in environments where temperature doesn"t change hahahaha. Animal that is deliberately homeothermic + endothermic. But they drastically lower their body temperature through reduction in metabolic rate for hibernation :) Thermal regulatory systems in endotherms in humans and mammals, the core temperature is maintained by the hypothalamus as 37 degree. Notice (from the graph) that when temperature rises metabolic rate also rises this happens because. We are trying to get means to get rid of the heat! Metabolic rate raise because you have to breath harder! Worse you have to lose water dryer desert conditions (die)