Air rushes into the lungs of humans during inhalation because
A)the volume of the thoracic cavity increases.
B)pressure in the alveoli increases.
C)the diaphragm contracts and pushes upward on the chest cavity.
D)smooth muscle lining the trachea,bronchi and bronchioles contracts and causes their volume to increase.
E)pulmonary muscles contract and pull on the outer surface of the lungs.

Question

Quizplus · Accepted Answer

When we inhale, the diaphragm contracts and moves downward, which increases the volume of the thoracic cavity. This decrease in pressure in the thoracic cavity causes air to rush into the lungs, allowing us to inhale.

Air Rushes into the Lungs of Humans During Inhalation Because