Surfactants
A)prevent collapse of the alveoli.
B)induce anaphylaxis.
C)cause upper respiratory obstruction.
D)decrease thoracic volume.

Question

Quizplus · Accepted Answer

Surfactants are a type of lipoprotein that are produced by type II alveolar cells in the lungs. They play a critical role in reducing surface tension within the alveoli, which prevents their collapse during exhalation. This increases lung compliance and facilitates gas exchange. Therefore, surfactants do not induce anaphylaxis, cause upper respiratory obstruction, or decrease thoracic volume.