Question

question 31
which of the following is the amount of air that enters and leaves the lungs during a normal inspiration and expiration?
a residual volume
b tidal volume
c vital capacity
d expiratory reserve volume

Explanation:

• Residual volume: The amount of air remaining in the lungs after maximum exhalation.
• Tidal volume: The volume of air that is inhaled or exhaled in a normal breath.
• Vital capacity: The maximum amount of air a person can expel from the lungs after a maximum inhalation.
• Expiratory reserve volume: The additional amount of air that can be exhaled after a normal exhalation.

Answer:

B. Tidal volume