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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