A lack of lung surfactant causes ________ lungs that resist expansion.
A)Floppy
B)Inflamed
C)Infected
D)Stiff

Question

Quizplus · Accepted Answer

Lung surfactant is responsible for reducing the surface tension in the alveoli of the lungs. This helps to prevent the collapse of small air sacs during exhalation and allows for the easy expansion of lungs during inhalation. A lack of lung surfactant, therefore, would lead to stiff lungs that resist expansion. Option A, floppy lungs, would be the opposite of this and imply that the lungs are too compliant or not able to maintain their shape properly. Options B and C are not directly related to the function of lung surfactant.

A Lack of Lung Surfactant Causes ________ Lungs That Resist