Breathing and Exchange of Gases Question 3
3. The maximum volume of air a person can breathe in after a forced expiration is known as :
[2019, Odisha]
(a) Total lung capacity
(b) Expiratory capacity
(c) Vital capacity
(d) Inspiratory capacity
Show Answer
Answer : c
Hints & Solution
(c) Vital capacity is the maximum amount of air expired by a person after forceful inspiration or inspired after forceful expiration. It represents the changes in volume from completely emptied lungs to completely filled lungs. It is about $4800 ml$. The value varies according to age and body size. Total amount of air in lungs at end of forceful inspiration is total lung capacity $5800 ml$
