What keeps the alveoli open so that gas exchange can take place?
A) rings of cartilage
B) surfactant
C) smooth muscle
D) mucus
E) air

Name: What keeps the alveoli open so that gas exchange can take place? A) rings of cartilage B) surfactant C) smooth muscle D) mucus E) air
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Question

Quizplus · Accepted Answer

Surfactant is a detergent-like substance secreted by cells in the alveoli that helps to reduce surface tension and prevent the collapse of the alveoli during exhalation.

What Keeps the Alveoli Open So That Gas Exchange Can