Spirometry Lab

Question 1

Tidal Volume TV

Answer 1

vol of air entering/leaving lungs during single breath (500 mL)

Question 2

Inspiratory Reserve Volume IRV

Answer 2

Extra vol of air that can be maximally inspired over and above the TV (3,000 mL)

Question 3

Inspiratory Capacity IC

Answer 3

TV + IRV; max vol air that can be inspired at end of normal quiet expiration (3,500 mL)

Question 4

Expiratory Reserve Volume ERV

Answer 4

extra vol of air that can be forced expired (1,000 mL)

Question 5

Residual Volume RV

Answer 5

Min amount of air remaining in lungs after maximal expiration (1,200 mL)

Question 6

Functional Residual Capacity FRC

Answer 6

Vol of air in lungs at end of normal passive expiration; ERV + RV (2,200 mL)

Question 7

Vital Capacity VC

Answer 7

max vol of air that can be moved out during single breath following max inspiration; IRV + TV + ERV; (4,500 mL)

Question 8

Total Lung Capacity TLC

Answer 8

max vol air that lungs can hold VC + RV (5,700 mL)

Question 9

Forced Expiratory Volume in One Second FEV1

Answer 9

vol of air that can be expired during first second of expiration in a VC determination (80% VC)