Which one of the following is most likely to occur in an animal during winter?
Correct answer: D. Thermogenesis
- A. Activation of sweat glands
- B. Dilation of skin blood vessels
- C. Panting
- D. Thermogenesis
Explanation
Thermogenesis is increased heat production, such as by shivering and increased metabolic activity, and helps an animal maintain body temperature in winter. The likely mistake is dilation of skin blood vessels, which increases heat loss and is more useful during overheating.
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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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