Lung Volumes and Capacities

Question 1

Tidal volume

Answer 1

The volume of air inhaled and exhaled with each breath

500 mL or 5–10 mL/kg

Question 2

Inspiratory reserve volumereserve volume

Answer 2

The maximum volume of air that can be inhaled after a normal inhalation
3,000 mL

Question 3

Expiratory reserve volume

Answer 3

The maximum volume of air that can be exhaled forcibly after a normal exhalation
1,100 mL

Question 4

Residual volume

Answer 4

The volume of air remaining in the lungs after a maximum exhalation
1,200 mL

Question 5

Vital capacity

Answer 5

The maximum volume of air exhaled from the point of maximum inspiration: VC = TV + IRV + ERV
4,600 mL

Question 6

Inspiratory capacity

Answer 6

The maximum volume of air inhaled after normal expiration: IC = TV + IRV
3,500 mL

Question 7

Functional residual capacity

Answer 7

The volume of air remaining in the lungs after a normal expiration: FRC = ERV + RV
2,300 mL

Question 8

Total lung capacity

Answer 8

The volume of air in the lungs after a maximum inspiration TLC = TV + IRV + ERV + RV
5,800 mL