The Exhalation of Air from Human Lungs is Driven By

Question

The exhalation of air from human lungs is driven by
A)a decrease in the volume of the thoracic cavity.
B)a decrease in the residual volume of the lungs.
C)the contraction of the diaphragm.
D)the closure of the epiglottis.
E)the expansion of the rib cage.

Accepted Answer

Exhalation is caused by the contraction of the internal intercostal muscles and the relaxation of the diaphragm, leading to a decrease in the volume of the thoracic cavity and a subsequent increase in pressure within the lungs. This increased pressure forces air out of the lungs.