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  4. The vital capacity of human lung is equal to

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Q. The vital capacity of human lung is equal to

Delhi UMET/DPMTDelhi UMET/DPMT 2008Breathing and Exchange of Gases

Solution:

Vital Capacity $(VC)=IRV+TV+ERV= 3000 + 500 + 1100$
$= 4600\, mL$
Tidal Volume $(TV) = 150\, mL$
(dead space volume) $+ 350\, mL$
(alveolar volume) $= 500\, mL$
Total Lung Capacity $(TLC)=VC+RV= 4600 + 1200 = 5800$
Functional Residual Capacity $(FRC) = ERV + RV$
$= 1100 + 1200 = 2300\, mL$