Lungs are made up of air filled sacs the alveloi they do not collase even after forceful expeiration because of

Options

A. Residual volume (RV)
B. Inspiratory Reserve volume (IRV)
C. Tidal volume (TV)
D. Expiratiory reserve volume (ERV)

Answer

A

Explanation

In lungs even after the most forceful expiration some of the volume of air remains .This volume is termed residual volume (RV) .Dlue to this lungs do not collapse evben after the most forceful expiration RV is about 1100 mL -1200 mL.