What is the function of pleural fluid?

Practice MCQ for SSC, UPSC, RRB Exams

A. Aids in digestion A.
B. Transports oxygen B.
C. Maintains alveolar pressure C.
D. Lubricates lung movement D.

Correct Answer: D সঠিক উত্তর: D

Explanation ব্যাখ্যা

Pleural fluid is a thin, lubricating substance that sits between the two layers of the pleura, which surrounds the lungs. It allows the lungs to glide smoothly against the chest wall during breathing, preventing friction. This lubrication is essential for proper lung function.

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