How does panting primarily help a dog lose body heat?
Correct answer: D. It increases evaporative cooling from airways
- A. It increases sweating across the skin
- B. It increases heat production by muscles
- C. It reduces blood flow to the tongue
- D. It increases evaporative cooling from airways
Explanation
Panting increases airflow over moist surfaces of the mouth and upper respiratory tract, causing evaporation that removes heat. Dogs have limited effective sweating over most of their body surface, so panting is their major cooling mechanism.
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About Veterinary Anatomy and Physiology
Covers the gross and microscopic structure of domestic animals, including bones, joints, muscles, organs, blood vessels and nerves. It explains how the respiratory, cardiovascular, digestive, urinary, nervous, endocrine and reproductive systems function, with attention to species differences and the relationship between anatomical structure and physiological processes.
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