Lung Volumes

Question 1

Normal Volumes: Tidal Volume

Answer 1

500ml

The amount of air inhaled or exhaled during a normal

Question 2

Normal Volumes: Vital Capacity

Answer 2

4L (Force Vital Capacity - F = FOUR)

The maximum amount of air that can be exhaled after taking the deepest possible breath. It’s the sum of the Tidal Volume (TV), Inspiratory Reserve Volume (IRV), and Expiratory Reserve Volume (ERV).

Question 3

Normal Volumes: Functional Residual Capacity

Answer 3

2.5L

The volume of air remaining in the lungs after a normal, passive exhalation. It’s the sum of the Expiratory Reserve Volume (ERV) and Residual Volume (RV).

Question 4

Normal Volumes: Residual Volume

Answer 4

1L

The volume of air remaining in the lungs after a maximal exhalation. This air cannot be expelled from the lungs and helps keep the alveoli open.

Question 5

Normal Volumes: Total Lung Capacity

Answer 5

5L

The total volume of air the lungs can hold. It’s the sum of all lung volumes: Tidal Volume (TV) + Inspiratory Reserve Volume (IRV) + Expiratory Reserve Volume (ERV) + Residual Volume (RV).

Question 6

Normal Volumes: Inspiratory residual volume

Answer 6

2L

The maximum volume of air that can be inhaled after a normal inhalation.

Question 7

Normal Volume: Inspiratory Capacity

Answer 7

2-4L

The maximum volume of air that can be inhaled after a normal exhalation. It’s the sum of Tidal Volume (TV) and Inspiratory Reserve Volume (IRV).

Question 8

Normal Volume: Expiratory Residual volume

Answer 8

1L

The maximum volume of air that can be exhaled after a normal exhalation.