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Breathing And Exchange Of Gases

Question
CBSEENBI11003167

After a deep inspiration and maximum expiration, the capacity of lungs is known as

  • vital capacity

  • tidal volume

  • IRV

  • ERV

Solution

A.

vital capacity

Vital capacity is the amount of air which one can inhale and exhale with maximum effort. It is the sum of tidal voulme, inspiratory reserve volume and expiratory reserve volume.

VC = TV + IRV + ERV

     = 500 + 3100 + 1200

     = 4800 mL