Question

Match the lung capacity with its description.

The amount of air remaining in the lungs after a normal breath:

A. total lung capacity
B. inspiratory capacity
C. vital capacity
D. functional residual capacity

Answer 1

The lung capacity described as the amount of air remaining in the lungs after a normal breath is the functional residual capacity (D). This includes the expiratory reserve volume and residual volume. Other capacities include vital capacity, total lung capacity, and inspiratory capacity.

Step-by-step explanation:

The lung capacity that matches the description of the amount of air remaining in the lungs after a normal breath is the functional residual capacity (D). The functional residual capacity (FRC) includes the expiratory reserve volume (ERV) and the residual volume (RV). This capacity is important as it ensures that there is a constant volume of air within the lungs, which facilitates continuous gas exchange between breaths and prevents lung collapse. The vital capacity (VC) is the sum of the expiratory reserve volume, tidal volume, and inspiratory reserve volume and indicates the maximum amount of air a person can exhale after a maximal inhalation. Total lung capacity (TLC) is the total amount of air contained within the lungs after a maximal inhalation. Inspiratory capacity (IC) is the volume of air that can be inhaled after the end of a normal expiration.