Lung Volumes and Capacities

What is the total lung capacity (TLC)?

• the total amount of oxygen in the lungs after a minimum inspiration

• the amount of gas in the lungs after a maximum inspiration

• the amount of gas in the lungs after a minimum respiration

• the amount of oxygen in the bloodstream

Normally, what is the total lung capacity in adult males? Females?

• 4.2 L; 6 L

• 3 L; 6 L

• 6 L; 4.2 L

• 5 L; 3.2 L

What is the vital capacity?

• the amount of gas that can be inhaled after a minimal inspiration

• the amount of gas that can be exhaled after a minimal inspiration

• the amount of gas that can be inhaled after a maximal inspiration

• the amount of gas that can be exhaled after a maximal inspiration

What percent does the residual volume make up of the total lung capacity?

• 16%

• 60%

• 20%

• 40%

Which equation accurately represents what the vital capacity is equal to? VC=

• TV+IRV+ERV

• VC+RV

• RV+ERV+TV

• ERV+IRV

Which four are included in the lung capacities?

• inspiratory capacity, FRC, VC, TV

• FRC, VC, TLC, TV

• inspiratory capacity, FRC, VC, and TLC

• IRV, ERV, TV, TLC

What is the inspiratory capacity?

• volume of air remaining after forced expiration

• total amount of air breathed out

• total amount of air movement

• total amount of air breathed in

What is indirectly used to measure the functional residual volume?

• nitric oxide

• helium dilution

• nitrogen washout

• sulfur diphosphate

What are lung volumes and capacities measured by?

• stethoscope

• spirometry

• thermometer

• sphygmomanometer

What may occur without an increase in respiratory rate and tidal volume?

• rise in pH

• hypoxia

• hypothermia

• drop in pH