What prevents the alveoli from collapsing?

Practice MCQ for SSC, UPSC, RRB Exams

A. Oxygen A.
B. Cilia B.
C. Surfactant C.
D. Mucus D.

Correct Answer: C সঠিক উত্তর: C

Explanation ব্যাখ্যা

Surfactant is a lipoprotein produced by type II alveolar cells that lines the alveoli and reduces surface tension, preventing them from collapsing during exhalation.
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