Also referred to a tidal
volume, the amount of air that a normal healthy human inhales and exhales is
500 ml. However, the Total Lung Capacity (the amount of air that the lungs can
hold) is 5 liters. Additionally, during exhalation, air is never totally evacuated
from the lungs. The ampunt of air that remaisn is called residual volume of
about 1200ml.
