Which of the following structures is responsible for warming or cooling of inhaled air within one degree of body temperature?
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The laryngopharynx
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The larynx
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The oropharynx
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The nasopharynx
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The nasal cavity
D
Correct answer
Explanation
The nasopharynx, extends from the base of the skull to the upper surface of the soft palate. It includes the space between the internal nares and the soft palate and lies above the oral cavity.
The nasal cavity conditions the air to be received by the other areas of the respiratory tract. Owing to the large surface area provided by the nasal conchae, the air passing through the nasal cavity is warmed or cooled to within 1 degree of body temperature.