Final answer:
The vital capacity of our lungs is the sum of the inspiratory reserve volume, tidal volume, and expiratory reserve volume.
Step-by-step explanation:
The vital capacity of our lungs is the sum of the inspiratory reserve volume, tidal volume, and expiratory reserve volume.
It represents the maximum amount of air that can be inhaled or exhaled during a respiratory cycle.
The inspiratory reserve volume is the additional amount of air that can be inhaled after a normal inhalation, and the expiratory reserve volume is the additional amount of air that can be exhaled after a normal exhalation.