What is the main function of the conducting air passages?
Correct answer: B. Warm, filter and humidify inspired air
- A. Exchange oxygen and carbon dioxide
- B. Warm, filter and humidify inspired air
- C. Produce red blood cells in the lungs
- D. Store oxygen for use during exercise
Explanation
The conducting passages move air toward the respiratory zone while warming, filtering and humidifying it. Gas exchange occurs mainly across the alveoli, not in the trachea or bronchi.
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About Respiratory System
The respiratory system includes the air passages, lungs, pleura, alveoli and the mechanics of breathing. It explains pulmonary ventilation, gas exchange, oxygen and carbon dioxide transport, regulation of breathing, and the difference between external respiration in the lungs and internal respiration in body tissues.
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