Respiratory volumes and capacities

Question 1

Tidal Volume (TV)

Answer 1

volume of air inhaled and exhaled during any single inspiratory-expiratory cycle

Question 2

Minute Volume (MV)

Answer 2

the liters of air exchanged per minute during quiet breathing ~12 TV events per minute ~6-9 L per minute

Question 3

ACTIVE breathing

Answer 3

INSPIRATION muscle contraction

Question 4

PASSIVE breathing

Answer 4

expiration no contraction

Question 5

Inspiratory Reserve Volume (IRV)

Answer 5

volume of air which can be inhaled beyond that inhaled in a TV cycle

Question 6

Expiratory Reserve Volume (ERV)

Answer 6

volume of air that can be exhaled following a quiet passive exhalation extra air to exhale

Question 7

Residual Volume (RV)

Answer 7

volume of air that remains in lungs and airways even after maximum exhalation cannot be voluntarily expelled

Question 8

Total Lung Capacity (TLC)

Answer 8

volume of air that the lungs are capable of holding at height of a maximun inhalation TLC=RV+IRV+ERV+TV

Question 9

Vital Capacity (VC)

Answer 9

volume of air that can be exhaled after as deep an inhalation as possible represents what can be used amount of air we use for speech VC=IRV+TV+ERV

Question 10

Inspiratory Capacity (IC)

Answer 10

maximum volume of air that can be inhaled from resting expiratory level IC=TV+IRV

Question 11

Functional Residual Capacity (FRC)

Answer 11

volume of air in lungs and airway at resting expiratory level volume of air remaining in lungs and airways at end-expiratory level FRC=RV+ERV