Question

The volume of air in the lungs and the rate at which it is exchanged during inspiration and expiration was measured.

The following diagram shows a group of the lung volumes and capacities.

Study the diagram carefully and explain briefly the following : 

Residual volume (RV)

Answer 1

Residual volume (RV): Air left in the lungs, even after forcible expiration is called residual volume. It is 1500 mL.