Question

practice it
what is functional residual capacity?
the amount of air that can be forcefully exhaled after a normal exhale
the amount of air that is inhaled during a normal breath
amount of air that remains in the lungs after a normal exhale
the amount of air that remains in the lungs after a forceful exhale
the amount of air that is inhaled and exhaled during a single breath

Explanation:

Functional residual capacity (FRC) is the volume of air that remains in the lungs after a normal exhalation. It is the sum of the expiratory reserve volume (ERV) and the residual volume (RV). FRC helps to keep the alveoli open and prevents them from collapsing.

• The amount of air that can be forcefully exhaled after a normal exhale is the expiratory reserve volume (ERV).
• The amount of air that is inhaled during a normal breath is the tidal volume (TV).
• The amount of air that remains in the lungs after a forceful exhale is the residual volume (RV).
• The amount of air that is inhaled and exhaled during a single breath is the tidal volume (TV).

Answer:

Amount of air that remains in the lungs after a normal exhale