Bronchoconstriction increases the work required to breathe because of
A)increased lung compliance.
B)decreased elastance.
C)increased airway resistance.
D)decreased intrapleural pressure.

Question

Quizplus · Accepted Answer

Bronchoconstriction refers to the constriction of the smooth muscle in the airways of the lungs, which leads to a decrease in the diameter of the airways and an increase in airway resistance. This increased resistance to airflow makes it more difficult for air to move in and out of the lungs during breathing, which increases the work required to breathe. Options A and B are incorrect because they describe situations that would make breathing easier, whereas Option D is incorrect because decreased intrapleural pressure would not be a direct result of bronchoconstriction.

Bronchoconstriction Increases the Work Required to Breathe Because of