Physiological Volumes and Capacities

Question 1

tidal volume?

Answer 1

volume of air enter or leaving the lungs during a single breath (500ml)

Question 2

extra air that can be maximally inspired over and above the typical resting tidal volume - around 3000ml

Answer 2

inspiratory reserve volume

Question 3

inspiratory capacity?

Answer 3

maximum volume that can be inspired at the end of normal quiet expiration

Question 4

IRV + TV

Answer 4

inspiratory capacity

Question 5

extra volume of air that can be actively expired by maximal contraction beyond the normal volume of air after a resting tidal volume - 1000ml

Answer 5

expiratory reserve volume

Question 6

minimum volume of air remaining in the lungs even after maximal expiration - 1200ml

Answer 6

residual volume

Question 7

functional residual capacity?

Answer 7

volume of air in the lungs at the end of normal passive expiration - 2200ml

Question 8

FRC = ?

Answer 8

ERV + RV

Question 9

maximum volume of air that can be moved out during a single breath following maximal inspiration

Answer 9

vital capacity

Question 10

VC = ?

Answer 10

IRV + TV + ERV

Question 11

maximum volume of air that the lungs can hold

Answer 11

total lung capacity (TLC)

Question 12

TLC = ?

Answer 12

VC + RV

Question 13

volume of air that can be expired in the first second of expiration in an FVC determination

Answer 13

FEV1

Question 14

what is a normal ratio between FEV1/FVC?

Answer 14

> 75%