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Topic: Breathing and respiration: mechanism, exchange and transport of gases, volumes, disorders· Human Physiology

Which of the following is not the function of conducting part of respiratory system ?

1. Provides surface for diffusion of \(O_2\) and \(CO_2\)

2. It clears inhaled air from foreign particles

3. Inhaled air is humidified

4. Temperature of inhaled air is brought to body temperature

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Answer: 1. Provides surface for diffusion of \(O_2\) and \(CO_2\)

Key idea: The conducting part (nose to terminal bronchioles) carries air, but gas exchange happens only in the respiratory (exchange) part, the alveoli.

The conducting part filters foreign particles (hairs, mucus), humidifies the air and brings it to body temperature. Surface for diffusion of \(\mathrm{O_2}\) and \(\mathrm{CO_2}\) is not its function.

Doubtly AI · 30 Oct 2026 AI-generated · not yet verified Report
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