SF3 2 BRS

Question 1

Tidal Volume

Answer 1

Volume inspired/expired with normal breath

Question 2

Inspiratory Reserve Volume (IRV)

Answer 2

Volume that can be inspired over and above tidal volume (used during exercise)

Question 3

Expiratory Reserve Volume (ERV)

Answer 3

Volume that can be expired after the expiration of a tidal volume

Question 4

Residual Volume (RV)

Answer 4

Volume that remains in the lungs after a maximal expiration. cannot be measured by spirometry

Question 5

Anatomic Dead Space

Answer 5

Volume of the conducting airways. Normally approximately 150 mL

Question 6

Physiological Dead Space

Answer 6

Functional measurement defined as volume of the lungs that does not participate in gas exchange.

Question 7

Minute Ventilation

Answer 7

Tidal volume multiplied by breaths/min

Question 8

Alveolar Ventilation

Answer 8

Difference between tidal volume and dead space, multiplied by breaths/min

Question 9

Inspiratory Capacity

Answer 9

Sum of tidal volume and IRV

Question 10

Functional Residual Capacity

Answer 10

Sum of Expiratory Reserve Volume and Residual Volume. Volume remaining in lungs after tidal volume expired.

Includes RV so cannot be measured by spirometry

Question 11

Vital Capacity / Forced Vital Capacity

Answer 11

Sum of tidal volume, IRV, and ERV.

Volume of air that can be forcibly expired after a maximal inspiration

Question 12

Total Lung Capacity

Answer 12

Sum of all four lung volumes (Inspiratory Reserve, Tidal, Expiratory Reserve, and Residual Volume)

Volume in lungs after a maximal inspiration.