Question

paul is getting ready to blow up a pool float because he cant find the air pump. he takes a big breath in after exhaling normally. the air he takes in is the
multiple choice
inspiratory capacity
tidal volume
vital capacity
inspiratory reserve volume

Explanation:

• Inspiratory capacity is the total amount of air that can be inhaled after a normal exhalation. It includes the tidal volume (normal breath) and the inspiratory reserve volume (extra air that can be forcefully inhaled). When Paul takes a big breath in after exhaling normally, he is using his inspiratory capacity.
• Tidal volume is the amount of air inhaled or exhaled during normal, quiet breathing. Since Paul is taking a "big breath in" (more than normal), it's not just tidal volume.
• Vital capacity is the maximum amount of air a person can expel from the lungs after a maximum inhalation. It's a larger measure that includes tidal volume, inspiratory reserve volume, and expiratory reserve volume. But the question is about the air taken in after normal exhalation (not after maximum exhalation), so it's not vital capacity.
• Inspiratory reserve volume is the extra air that can be forcefully inhaled after a normal inhalation. But here, it's after a normal exhalation (so the total inhaled air is tidal + inspiratory reserve = inspiratory capacity).

Answer:

Inspiratory capacity