Question

question 48
which of the following cannot be measured by a spirometer?
tidal volume
residual volume
inspiratory reserve volume
expiratory reserve volume

Explanation:

A spirometer measures the volume of air that can be inhaled or exhaled. Tidal volume (normal breath), inspiratory reserve volume (extra air inhaled after normal breath), and expiratory reserve volume (extra air exhaled after normal breath) can be measured. Residual volume (air remaining in lungs after maximum exhalation) cannot be measured directly by a spirometer as it is the air that remains trapped and not exchanged during normal breathing movements.

Answer:

B. Residual volume