Endotherm

Unlike an ecotherm, an endotherm uses its own metabolism in order to receive body heat. Endotherms are able to maintain a constant body temperature, even if the temperature outside cools or heats up suddenly. Examples of endothermic creatures include birds, some fishes, several insects and mammals. Although endotherms can be warmer than their surroundings, they are able to cool down themselves without having to depend on shade or other factors. Endotherms can also be phsyically active for a longer period of time than ectotherms because they have higher levels of aerobic metabolism, which is what helps sustain any physical activity that is rigorous. However, endotherms also consume more food than ectotherms because they reuquire more energy. Three factors that are important when considering endothermy are active aerobic metabolism, mobility and body temperature.

A human being is considered endothermic because they can maintain a constant body temperature. For example, in the picture below this human being is wiping sweat off the forehead. When the body overheats, we sweat to cool down which is an example of us maintaining a constant body temperature.

Works Cited:
Campbell, Neil, Jane Reece, and Lawrence Mitchell. “Controlling the Internal Environment.” Biology. Fifth ed. Menlo Park: Jim Green Publishing, 1999. 866. Print.