Question
Biology Question on Mechanism Of Breathing
Vital capacity of lung is _________.
A
IRV + ERV + TV + RV
B
IRV + ERV + TV – RV
C
IRV + ERV + TV
D
IRV + ERV
Answer
IRV + ERV + TV
Explanation
Solution
The largest volume of air that may be exhaled following a powerful inhale is referred to as vital capacity. The sum of tidal volume (TV), inhalatory reserve volume (IRV), and expiratory reserve volume (ERV), or total lung capacity less residual volume, is what is meant by this term. It ranges from 4.1 to 4.6 litres.
The correct option is (C): IRV + ERV + TV