The function of the surfactant in the lung is to help
A) reduce the surface tension of water in the alveoli
B) trap bacteria and dust
C) move bacteria and dust toward the pharynx
D) both b and c above

Question

Quizplus · Accepted Answer

Surfactant reduces the surface tension of water in the alveoli, which helps to prevent the collapse of the alveoli during exhalation. This allows for efficient gas exchange in the lungs. B and C are not functions of surfactant.

The Function of the Surfactant in the Lung Is to Help