Which statement is correct for residual volume?
A) It helps prevent lung collapse.
B) It is the normal volume of air inhaled.
C) It is the normal volume of air exhaled.
D) It is the maximum volume of air that can be inspired.

Question

Quizplus · Accepted Answer

Residual volume is the volume of air that remains in the lungs after a maximal forced expiration. It helps prevent lung collapse by keeping the alveoli open and maintaining a small amount of pressure in the airways. Option B and C are incorrect as residual volume is not the normal volume of air inhaled or exhaled. Option D is incorrect as it refers to inspiratory capacity, not residual volume.

Which Statement Is Correct for Residual Volume