Question

Given that tidal volume is $600$ml, inspiratory reserve volume is $2500$ml, and expiratory reserve volume is $800$ml, what is the value of vital capacity of lung?

• A. $3900$ml
• B. $3300$ml
• C. $3100$ml
• D. $1400$ml

Answer 1

Answer: (A)

$3900$ml

Vital capacity (VC) of the lung is the maximum amount of air one can exhale from the lungs after a maximum inhalation. It is equal to the sum of inspiratory reserve volume (IRV), tidal volume (TV) and expiratory reserve volume (ERV).

Hence, vital capacity = 2500 + 600 + 800 = 3900 ml.

Thus, the correct answer is option A.