What is residual volume?

A. Air that always remains in lungs A.

B. Total lung capacity B.

C. Air inhaled during forced breathing C.

D. Air expelled forcibly D.

Correct Answer: A সঠিক উত্তর: A

Explanation ব্যাখ্যা

Residual volume (RV) refers to the amount of air that stays in the lungs even after a forceful exhalation. This volume is essential to prevent the lungs from collapsing. It's important to note that RV is different from other lung volumes like tidal volume (the amount of air inhaled and exhaled during a normal breath) or total lung capacity (the maximum amount of air the lungs can hold).

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Correct Answer: A সঠিক উত্তর: A

Explanation ব্যাখ্যা

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