Inspiratory events occur because
A)the air pressure in the alveoli is greater than that of the atmosphere
B)the air pressure in the alveoli is less than that of the atmosphere
C)the volume of the thoracic cavity increases
D)of conditions a and b
E)of conditions b and c

Question

Quizplus · Accepted Answer

Inspiratory events occur because the air pressure in the alveoli is less than that of the atmosphere, which causes air to flow into the lungs. This happens because the volume of the thoracic cavity increases during inhalation, which decreases the pressure in the lungs. Therefore, the correct answer is E, as it includes both the conditions necessary for inspiratory events to occur.

Inspiratory Events Occur Because