Which of the following would increase the rate of heat exchange between an animal and its environment?
Correct answer: C. Wind blowing across the body surface
- A. Feather or fur
- B. Vasoconstriction
- C. Wind blowing across the body surface
- D. Counter current heat exchange
Explanation
Wind blowing across the body surface can increase the rate of heat exchange. This is because wind removes the thin layer of warm, stagnant air adjacent to the skin, facilitating convective heat loss. As the air moves across the skin, it carries away heat more efficiently, causing the animal to lose heat faster to its surroundings
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About Thermoregulation
Thermoregulation maintains body temperature through negative feedback controlled mainly by the hypothalamus. It covers vasodilation and vasoconstriction, sweating, shivering, changes in metabolic heat production and behavioural responses, while distinguishing heat loss by radiation, conduction, convection and evaporation from temperature regulation itself.
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