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Tidal volume

Normal amount of air breathed in and out

1

Residual volume

Volume left in the lungs after air is exhaled as completely as possible

2

Expiratory reserve volume

Exhaling and then exhaling again.

3

Inspiratory reserve volume

Inhale normally, then without exhaling, continue to fill up lungs as much as possible.

4

Total lung capacity

Sum of all volumes

5

Vital capacity

Total amount that can be exhaled after a maximal Inhalation

6

Functional residual capacity

Air left in lung after a normal exhalation

7

Inspiratory capacity

Sum of the inspiratory reserve volume and the tidal volume