Question

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lo 4.4. what is inspiratory reserve volume?
the amount of air that remains in the lungs after a maximal exhalation
amount of air that is inhaled during a normal breath
amount of air that can be exhaled above and beyond the tidal volume
amount of air that can be inhaled above and beyond the tidal volume
the amount of air that is left in the lungs after a normal exhalation

Explanation:

Inspiratory reserve volume (IRV) is the additional amount of air that can be forcefully inhaled after a normal tidal inhalation. Let's analyze each option:

• The amount of air that remains in the lungs after a maximal exhalation is residual volume.
• The amount of air that is inhaled during a normal breath is tidal volume.
• The amount of air that can be exhaled above and beyond the tidal volume is expiratory reserve volume.
• The amount of air that is left in the lungs after a normal exhalation is functional residual capacity.

Answer:

Amount of air that can be inhaled above and beyond the tidal volume