The volume of air that will remain in the lungs after a normal expiration ?

Question

1. Functional residual volume
2. Expiratory capacity
3. Total lung capacity
4. Residual volume

Answer 1

Answers is 1.functional residual volume

Functional residual capacity (FRC) is the amount of air that remains in a person's lungs after a normal breath out.

In simple words combination of both expiratory residual volume + residual volume

Expiratory Capacity (EC): Total volume of air a person can expire after

a normal inspiration. This includes tidal volume and expiratory reserve

volume (TV+ERV).

Residual Volume (RV): Volume of air remaining in the lungs even after a

forcible expiration. This averages 1100 mL to 1200 mL.

Total Lung Capacity (TLC): Total volume of air accommodated in the

lungs at the end of a forced inspiration. This includes RV, ERV, TV and

IRV or vital capacity + residual volume.

Again here vital capacity means ERV +TV+IRV.

Simple go ahead guys ...