Question

what is residual volume maximum volume of air that can be exhaled after a maximum inhalation volume of air breathed in and out in a normal breath volume of air still contained in the lungs after a maximal exhalation additional inspired air over and above the tidal volume volume of air in the lungs after maximum inhalation

Explanation:

Residual volume is the amount of air that remains in the lungs even after a maximal exhalation. This helps to keep the alveoli open and prevent lung collapse.

Answer:

volume of air still contained in the lungs after a maximal exhalation