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Vital Capacity

A man's lung ...

Question

A man's lung volume is $6$ litres at maximum inspiration. His functional residual volume is $3.5$ litres and expiratory reserve volume is $2$ litres. What is his vital capacity?

5

litres

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2.5

litres

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4

litres

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4.5

litres

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Solution

The correct option is D $4.5$ litres
D. 4.5 litres
Solution: Vital capacity
= total lung capacity - residual volume
= total lung capacity - (functional residual volume - expiratory reserve volume) = 6 litres - (3.5 litres- 2 litres)
= 4.5 litres
So the correct answer is ''4.5 litres''.

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A man's lung volume is 6 litres at maximum inspiration. His functional residual volume is 3.5 litres and expiratory reserve volume is 2 litres. What is his vital capacity?

The correct option is D 4.5 litresD. 4.5 litresSolution: Vital capacity = total lung capacity - residual volume = total lung capacity - (functional residual volume - expiratory reserve volume) = 6 litres - (3.5 litres- 2 litres)= 4.5 litresSo the correct answer is ''4.5 litres''.

A man's lung volume is $6$ litres at maximum inspiration. His functional residual volume is $3.5$ litres and expiratory reserve volume is $2$ litres. What is his vital capacity?

The correct option is D $4.5$ litres
D. 4.5 litres
Solution: Vital capacity
= total lung capacity - residual volume
= total lung capacity - (functional residual volume - expiratory reserve volume) = 6 litres - (3.5 litres- 2 litres)
= 4.5 litres
So the correct answer is ''4.5 litres''.