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Q.
What is vital capacity of our lungs?
AIPMTAIPMT 1988Breathing and Exchange of Gases
Solution:
Vital capacity of lungs is the largest possible expiration after largest possible inspiration that is greatest. Volume of air can be exchanged in single respiration or amount of air breathed in and out with greatest possible efforts.
Vital capacity = TV + IRV + ERV
Total lung capacity = VC + RV
So we can say that VC = Total lung capacity - Residual volume