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Breathing And Exchange Of Gases

Question
CBSEENBI11003361
Wired Faculty App

The vital capacity of lungs is equal to

  • 4000 ml

  • 5000 ml

  • 6000 ml

  • 7000 ml

Solution

B.

5000 ml

The vital capacity is the maximum amount of air that can be expelled from lungs by forced exhalation after a forced inhalation. It is equal to the sum of tidal volume (TV), inspiratory reserve volume (IRV) and expiratory reserve volume (ERV).
VC= TV+ IRV+ ERV
    = 500 + 3000 + 1100
    =4600 ml

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