What is the vital capacity of our lungs?

Inspiratory reserve volume plus expiratory reserve volume

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Inspiratory reserve volume plus tidal volume

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Total lung capacity minus expiratory reserve volume

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Total lung capacity minus residual volume

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Solution

The correct option is D
Total lung capacity minus residual volume

Vital capacity is the amount of air one can inhale or exhale with maximum effort. It is the sum of inspiratory reserve volume, tidal volume, and expiratory reserve volume, and is about 4700 ml. It can also be calculated as the total lung capacity minus the residual volume.

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