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Breathing and Exchange of Gases question

2022 · Q69
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Breathing and Exchange of Gases question

2022 · Q69

NEETBiologyBreathing and Exchange of GasesMCQ+4 / −1

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

  1. A
    It clears inhaled air from foreign particles
  2. B
    Inhaled air is humidified
  3. C
    Temperature of inhaled air is brought to body temperature
  4. D
    Provides surface for diffusion of O2 and CO2
View written solutionFree

Correct answer: D

Option (d) is correct because the part starting with the external nostrils upto the terminal bronchioles constitute the conducting part; whereas the alveoli and their ducts form the respiratory or exchange part of the respiratory system.

The conducting part transports the atmospheric air to the alveoli, clears it from foreign particles, humidifies and also bring the air to body temperature. Exchange part is the site of actual diffusion of O2/CO2 between blood and atmospheric air.

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