Respiratory System Quiz

How much air does each inspiration of normal, quiet breathing pull into the respiratory passageways?

• 150 ml

• 500 ml

• 3100 ml

• 1200 ml

Answer explanation

Each inspiration of normal, quiet breathing pulls in approximately 500 ml of air into the respiratory passageways.

What is the term used for the volume of air inspired or expired during each normal, quiet breath?

• Inspiratory reserve volume

• Tidal volume

• Expiratory reserve volume

• Residual volume

Answer explanation

Tidal volume is the term used for the volume of air inspired or expired during each normal, quiet breath.

What is the average inspiratory reserve volume (IRV) for an adult?

• 500 ml

• 1200 ml

• 1500 ml

• 3100 ml

Answer explanation

The correct average inspiratory reserve volume (IRV) for an adult is 3100 ml, making it the most suitable choice among the options provided.

What is the volume of air called that remains in the "dead spaces" of the respiratory tract after a normal expiration?

• Tidal volume

• Inspiratory reserve volume

• Residual volume

• Expiratory reserve volume

Answer explanation

The volume of air that remains in the 'dead spaces' of the respiratory tract after a normal expiration is called the Residual volume.

What is the total lung capacity, the sum of all volumes, for an average adult?

• 2400 ml

• 3600 ml

• 4800 ml

• 6000 ml

Answer explanation

The correct total lung capacity for an average adult is 6000 ml, which is the sum of all volumes in the lungs.

Which volume is described as the amount of air that can still be exhaled forcibly after the expiration of a normal tidal volume?

• Tidal volume

• Inspiratory reserve volume

• Expiratory reserve volume

• Residual volume

Answer explanation

The Expiratory reserve volume is described as the amount of air that can still be exhaled forcibly after the expiration of a normal tidal volume.

What is the functional residual capacity (FRC) of the lungs?

• The sum of the tidal volume and inspiratory reserve volume

• The sum of the residual volume and expiratory reserve volume

• The sum of the residual volume and tidal volume

• The sum of the residual volume and inspiratory reserve volume

Answer explanation

The functional residual capacity (FRC) of the lungs is the sum of the residual volume and expiratory reserve volume.

What is the vital capacity (VC) of the lungs?

• The sum of the tidal volume and inspiratory reserve volume

• The sum of the inspiratory reserve volume, tidal volume, and expiratory reserve volume

• The sum of the residual volume and expiratory reserve volume

• The sum of the residual volume and tidal volume

Answer explanation

The vital capacity (VC) of the lungs is the sum of the inspiratory reserve volume, tidal volume, and expiratory reserve volume.