Ventilation Volumes

Question 1

Tidal volume

Answer 1

Volume of gas inhaled or exhaled during a normal resting breath

Question 2

Inspiratory reserve volume (IRV)

Answer 2

Volume of gas that can be inhaled beyond a resting tidal inhalation

Question 3

Expiratory reserve volume (ERV)

Answer 3

Volume of gas that can be exhaled beyond a normal resting tidal exhalation

Question 4

Residual volume (RV)

Answer 4

Volume of gas that remains in the lungs after ERV has been exhaled

Question 5

Inspiratory capacity

Answer 5

The amount of air that can be inhaled at rest

Question 6

Vital capacity

Answer 6

Amount of air under volitional control (biggest breath you can take in and out at rest) measured as FVC

Question 7

Functional residual capacity

Answer 7

Amount of air that resides in the lungs after a normal resting tidal exhalation

Question 8

Total lung capacity

Answer 8

Total amount of air that is contained within the thorax during a maximum inspiratory effort