The evaporative cooling in the respiratory tract of dogs is called?
Correct answer: C. Panting
- A. Vasodilation
- B. Vasoconstriction
- C. Panting
- D. All of these
Explanation
Panting increases evaporation of water from the respiratory tract, and evaporation removes heat from a dog's body. Vasodilation and vasoconstriction change blood flow through vessels but do not describe the respiratory evaporative process, so option a is the likely distractor.
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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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