Question 1

W hich of the following cannot be measured using a spirometer?

Accepted Answer

A)  FEV1 
B)  FVC 
C)  Tidal volume (TV) 
D)  Vital capacity 
E)  Residual volume 
A)  FEV1 
B)  FVC 
C)  Tidal volume (TV) 
D)  Vital capacity 
E)  Residual volume E

Question 2

The most likely place for turbulent flow is the

Accepted Answer

A)  Trachea 
B)  Bronchi 
C)  Bronchioles 
D)  Respiratory bronchioles 
E)  Alveoli 
A)  Trachea 
B)  Bronchi 
C)  Bronchioles 
D)  Respiratory bronchioles 
E)  Alveoli A

Question 3

Chris Long, a former defensive end for the University of Virginia, has a tidal volume of 0.9 L and a respiratory rate of 12 breaths per minute at rest. His anatomic dead space is 0.2 L. His pulmonary ventilation at rest is

Accepted Answer

A)  8.4 L / m in 
B)  10.8 L / min 
C)  10.6 L / min 
D)  8.2 L / m in 
E)  0.7 L 
A)  8.4 L / m in 
B)  10.8 L / min 
C)  10.6 L / min 
D)  8.2 L / m in 
E)  0.7 L B

Question 4

The inspiratory reserve volume is the

Accepted Answer

A)  Volume remaining in the lungs after a normal expiration 
B)  Volume that can be breathed in after a normal inspiration 
C)  Difference between inspiratory capacity and inspiratory reserve volume 
D)  Volume than can be breathed in after a normal expiration 
E)  Volume remaining in the lungs after a forceful expiration 
A)  Volume remaining in the lungs after a normal expiration 
B)  Volume that can be breathed in after a normal inspiration 
C)  Difference between inspiratory capacity and inspiratory reserve volume 
D)  Volume than can be breathed in after a normal expiration 
E)  Volume remaining in the lungs after a forceful expiration

Question 5

The tidal volume is the

Accepted Answer

A)  Volume remaining in the lungs after a normal expiration 
B)  Volume that can be breathed in after a normal inspiration 
C)  Difference between inspiratory capacity and inspiratory reserve volume 
D)  Volume than can be breathed in after a normal expiration 
E)  Volume remaining in the lungs after a forceful expiration 
A)  Volume remaining in the lungs after a normal expiration 
B)  Volume that can be breathed in after a normal inspiration 
C)  Difference between inspiratory capacity and inspiratory reserve volume 
D)  Volume than can be breathed in after a normal expiration 
E)  Volume remaining in the lungs after a forceful expiration

Question 6

The functional residual capacity is the

Accepted Answer

A)  Volume remaining in the lungs after a normal expiration 
B)  Volume that can be breathed in after a normal inspiration 
C)  Difference between inspiratory capacity and inspiratory reserve volume 
D)  Volume than can be breathed in after a normal expiration 
E)  Volume remaining in the lungs after a forceful expiration 
A)  Volume remaining in the lungs after a normal expiration 
B)  Volume that can be breathed in after a normal inspiration 
C)  Difference between inspiratory capacity and inspiratory reserve volume 
D)  Volume than can be breathed in after a normal expiration 
E)  Volume remaining in the lungs after a forceful expiration

Question 7

Chris Long, a former defensive end for the University of Virginia, is a big person with a functional residual capacity of 3 L, a vital capacity of 6 L and an expiratory reserve volum e of 1 L. What is his inspiratory capacity?

Accepted Answer

A)  10 L 
B)  5 L 
C)  3 L 
D)  4 L 
E)  8 L 
A)  10 L 
B)  5 L 
C)  3 L 
D)  4 L 
E)  8 L

Question 8

The resistance of the airways

Accepted Answer

A)  Increases with increased flow rates 
B)  Decreases with increased flow rates 
C)  Is independent of flow rates 
D)  Is lower when flow is turbulent 
E)  Is ohmic 
A)  Increases with increased flow rates 
B)  Decreases with increased flow rates 
C)  Is independent of flow rates 
D)  Is lower when flow is turbulent 
E)  Is ohmic

Question 9

Dynamic compression refers to

Accepted Answer

A)  Compression of the airways due to muscular compression of the chest 
B)  Compression of the alveoli during forceful expiration 
C)  Compression of the pulmonary arteries and veins during forceful expiration 
D)  Compression of the airways during forceful expiration 
E)  Loss of positive pressure on the lungs during forceful expiration 
A)  Compression of the airways due to muscular compression of the chest 
B)  Compression of the alveoli during forceful expiration 
C)  Compression of the pulmonary arteries and veins during forceful expiration 
D)  Compression of the airways during forceful expiration 
E)  Loss of positive pressure on the lungs during forceful expiration

Question 10

As the generation number of the airway increases

Accepted Answer

A)  The size of the airway increases and the aggregate cross-sectional area increases 
B)  The size of the airway decreases and the aggreagate cross-sectional area
increases 
C)  The size of the airway increases and the aggregate cross-sectional area decreases 
D)  The size of the airway decreases and the aggregate cross-sectional area decreases 
E)  The airways become stiffer 
A)  The size of the airway increases and the aggregate cross-sectional area increases 
B)  The size of the airway decreases and the aggreagate cross-sectional area
increases 
C)  The size of the airway increases and the aggregate cross-sectional area decreases 
D)  The size of the airway decreases and the aggregate cross-sectional area decreases 
E)  The airways become stiffer

Question 11

The residual volume is the

Accepted Answer

A)  Volume remaining in the lungs after a normal expiration 
B)  Volume that can be breathed in after a normal inspiration 
C)  Difference between inspiratory capacity and inspiratory reserve volume 
D)  Volume than can be breathed in after a normal expiration 
E)  Volume remaining in the lungs after a forceful expiration 
A)  Volume remaining in the lungs after a normal expiration 
B)  Volume that can be breathed in after a normal inspiration 
C)  Difference between inspiratory capacity and inspiratory reserve volume 
D)  Volume than can be breathed in after a normal expiration 
E)  Volume remaining in the lungs after a forceful expiration

Question 12

Turbulent flow

Accepted Answer

A)  Never occurs in the airways 
B)  Occurs only in the larger airways and bronchi 
C)  Occurs in the respiratory units 
D)  Is enhanced by small diameter of the airways 
E)  Is increased by increasing the viscosity 
A)  Never occurs in the airways 
B)  Occurs only in the larger airways and bronchi 
C)  Occurs in the respiratory units 
D)  Is enhanced by small diameter of the airways 
E)  Is increased by increasing the viscosity

Question 13

Bronchodilation can be brought about by

Accepted Answer

A)  Stim ulation of histamine receptors in the alveoli 
B)  Stimulation of histamine receptors in the smooth muscle cells of the bronchi 
C)  Stimulation of $\alpha$1 receptors on smooth muscle cells of the bronchi 
D)  Stimulation of $\beta$2 receptors on smooth muscle cells of the bronchi 
E)  Stimulation of cholinergic receptors on smooth muscle cells of the bronchi 
A)  Stim ulation of histamine receptors in the alveoli 
B)  Stimulation of histamine receptors in the smooth muscle cells of the bronchi 
C)  Stimulation of $\alpha$1 receptors on smooth muscle cells of the bronchi 
D)  Stimulation of $\beta$2 receptors on smooth muscle cells of the bronchi 
E)  Stimulation of cholinergic receptors on smooth muscle cells of the bronchi

Question 14

With a spirometer, you can get a clinically useful measure of airway resistance from

Accepted Answer

A)  FRC 
B)  VC 
C)  FEV1 
D)  FEV1 / VC 
E)  IRV / VC 
A)  FRC 
B)  VC 
C)  FEV1 
D)  FEV1 / VC 
E)  IRV / VC

Question 15

A person has a functional residual capacity of 3 L, a vital capacity of 6 L, and an expiratory reserve volume of 1 L. What is the total lung capacity?

Accepted Answer

A)  10 L 
B)  9 L 
C)  8 L 
D)  7 L 
E)  3 L 
A)  10 L 
B)  9 L 
C)  8 L 
D)  7 L 
E)  3 L

Question 16

The Reynolds number is calculated as

Accepted Answer

A)  8$\eta$l / $\pi$r4 
B)  QV /$\Delta$P 
C)  $\Delta$V / $\Delta$P 
D)  2 a v $\rho$ /$\eta$ 
E)  $\pi$r4 / 8$\eta$l 
A)  8$\eta$l / $\pi$r4 
B)  QV /$\Delta$P 
C)  $\Delta$V / $\Delta$P 
D)  2 a v $\rho$ /$\eta$ 
E)  $\pi$r4 / 8$\eta$l

Question 17

Peak expiratory flow rates for normal individuals are about

Accepted Answer

A)  6- 11 L min-1 
B)  12 0 L min-1 
C)  120 L s-1 
D)  6-11 L s-1 
E)  60 L s-1 
A)  6- 11 L min-1 
B)  12 0 L min-1 
C)  120 L s-1 
D)  6-11 L s-1 
E)  60 L s-1

Question 18

The inspiratory capacity is the

Accepted Answer

A)  Volume remaining in the lungs after a normal expiration 
B)  Volume that can be breathed in after a normal inspiration 
C)  Difference between inspiratory capacity and inspiratory reserve volume 
D)  Volume than can be breathed in after a normal expiration 
E)  Volume remaining in the lungs after a forceful expiration 
A)  Volume remaining in the lungs after a normal expiration 
B)  Volume that can be breathed in after a normal inspiration 
C)  Difference between inspiratory capacity and inspiratory reserve volume 
D)  Volume than can be breathed in after a normal expiration 
E)  Volume remaining in the lungs after a forceful expiration

Question 19

If the normal tidal volume in a person is 0.5 L and the normal pulmonary ventilation is 6 L /min, then the breathing frequency should be

Accepted Answer

A)  12 m in-1 
B)  15 min-1 
C)  30 min-1 
D)  5.5 min-1 
E)  3 min-1 
A)  12 m in-1 
B)  15 min-1 
C)  30 min-1 
D)  5.5 min-1 
E)  3 min-1

Exam 46: Lung Volumes and Airway Resistance

W hich of the following cannot be measured using a spirometer?

The most likely place for turbulent flow is the

Chris Long, a former defensive end for the University of Virginia, has a tidal volume of 0.9 L and a respiratory rate of 12 breaths per minute at rest. His anatomic dead space is 0.2 L. His pulmonary ventilation at rest is

The inspiratory reserve volume is the

The tidal volume is the

The functional residual capacity is the

Chris Long, a former defensive end for the University of Virginia, is a big person with a functional residual capacity of 3 L, a vital capacity of 6 L and an expiratory reserve volum e of 1 L. What is his inspiratory capacity?

The resistance of the airways

Dynamic compression refers to

As the generation number of the airway increases

The residual volume is the

Turbulent flow

Bronchodilation can be brought about by

With a spirometer, you can get a clinically useful measure of airway resistance from

A person has a functional residual capacity of 3 L, a vital capacity of 6 L, and an expiratory reserve volume of 1 L. What is the total lung capacity?

The Reynolds number is calculated as

Peak expiratory flow rates for normal individuals are about

The inspiratory capacity is the

If the normal tidal volume in a person is 0.5 L and the normal pulmonary ventilation is 6 L /min, then the breathing frequency should be

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