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Breathing and Exchange of Gases question

2017 · Q4
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Breathing and Exchange of Gases question

2017 · Q4

NEETBiologyBreathing and Exchange of GasesMCQ+4 / −1
Lungs are made up of air-filed sacs, the alveoli. The do not collapse even after forceful expiration, because of
  1. A
    inspiratory reserve volume
  2. B
    tidal volume
  3. C
    expiratory reserve volume
  4. D
    residual volume.
View written solutionFree

Correct answer: D

Residual volume is the volume of air which remains in the lungs after the most forceful expiration. This residual air enables the lungs to continue exchange of gases even after maximum exhalation. Due to this, lungs do not collapse even after forceful expiration.

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