Question 1

Oxygen is transported in the blood

Accepted Answer

A)   bound to hemoglobin.
B)   bound to albumin.
C)   dissolved in the plasma.
D)   as part of the bicarbonate ion.
E)   dissolved in the plasma and bound to hemoglobin.F) All of the above
G) A) and E)

Question 2

Which of the following factors keeps the alveoli expanded?

Accepted Answer

A)   a pneumothorax
B)   negative pleural pressure
C)   alveolar pressure being equal to atmospheric pressure
D)   a reduction in surfactant
E)   negative intra-alveolar pressureF) C) and D)
G) A) and E)

Question 3

Air in the pleural cavity is called

Accepted Answer

A)   emphysema.
B)   respiratory distress syndrome.
C)   a pneumothorax.
D)   pneumonia.
E)   forced expiration.F) B) and C)
G) A) and E)

Question 4

As temperature increases, how would this affect the oxyhemoglobin-dissociation curve?

Accepted Answer

A)   shift it to the left
B)   shift it to the right
C)   no change
D)   shift it up
E)   None of these choices is correctF) A) and B)
G) A) and C)

Question 5

Which of the following is NOT a process of respiration?

Accepted Answer

A)   voice production
B)   internal respiration
C)   ventilation
D)   external respiration
E)   transport of blood gases in the bloodF) B) and C)
G) All of the above

Question 6

During exercise, the oxygen-hemoglobin dissociation curve

Accepted Answer

A)   shifts to the right.
B)   shifts to the left.
C)   doesn't shift.D) A) and C)
E) A) and B)

Question 7

The trachea

Accepted Answer

A)   is located in the pleural cavity.
B)   has "C" shaped cartilages that form its anterior and lateral sides.
C)   is lined with keratinized squamous epithelium.
D)   bifurcates to form the bronchioles.
E)   collapses when not in use.F) C) and E)
G) B) and C)

Question 8

__________ is the volume of air inspired during a normal inspiration.

Accepted Answer

The answer of __________ is the volume of air inspired...

Question 9

Hemoglobin that has released its oxygen

Accepted Answer

A)   loses its affinity for oxygen.
B)   will dissolve in the plasma.
C)   will bind more readily to carbon dioxide.
D)   is broken down to heme and globin and excreted.
E)   will bind more readily to oxygen.F) All of the above
G) None of the above

Question 10

The auditory tubes open into the

Accepted Answer

A)   fauces.
B)   oropharynx.
C)   nasopharynx.
D)   laryngopharynx.
E)   nasal cavity.F) A) and B)
G) A) and C)

Question 11

What is the function of the ciliated epithelium of the tracheobronchial tree?

Accepted Answer

A)   to cause coughing
B)   a mucus-cilia escalator
C)   move dirt toward the alveoli
D)   All of the choices are correctE) C) and D)
F) B) and D)

Question 12

Rhythmicity of breathing involves

Accepted Answer

A)   conscious effort and control.
B)   stimulation of inspiration. Expiration is automatic.
C)   pontine respiratory group as a necessary part.
D)   a set pattern of inspiration - expiration that is always the same.
E)   the pre-Bötzinger complex of the ventral respiratory group.F) B) and E)
G) A) and E)

Question 13

Mr. Huff and Puff exhales normally; then, using forced expiration, he exhales as much air as possible. The volume of air still remaining in his lungs is called

Accepted Answer

A)   expiratory reserve volume.
B)   tidal volume.
C)   inspiratory reserve volume.
D)   vital capacity.
E)   residual volume.F) A) and B)
G) A) and C)

Question 14

The olfactory epithelium responsible for the sense of smell is located in the

Accepted Answer

A)   floor of the nasal cavity.
B)   wall of the nasal septum.
C)   lining of the nasopharynx.
D)   cavity of the paranasal sinuses.
E)   roof of the nasal cavity.F) B) and E)
G) B) and D)

Question 15

Pulmonary edema will cause the rate of gas diffusion to

Accepted Answer

A)   increase.
B)   decrease.
C)   remain the same.D) All of the above
E) B) and C)

Question 16

The walls of the alveoli

Accepted Answer

A)   are composed of simple squamous epithelium.
B)   contain several layers of smooth muscle.
C)   contain goblet cells.
D)   are surrounded by cartilage.
E)   are ciliated.F) A) and E)
G) A) and D)

Question 17

Match the disorder of the respiratory system with the best description.
-cystic fibrosis

Accepted Answer

A)  destruction of the alveolar walls
B)  inflammation of the bronchii
C)  inherited disease that affects secretory cells lining the lungs
D)  replacement of lung tissue with fibrous connective tissue
E)  infant stops breathing during sleepF) A) and B)
G) A) and C)

Question 18

What is the volume of air that can be forcibly expired after expiration of the tidal volume?

Accepted Answer

A)   residual volume
B)   inspiratory reserve volume
C)   vital capacity
D)   expiratory reserve volumeE) C) and D)
F) None of the above

Question 19

-The diagram illustrates the major regulatory mechanisms of ventilation. What mechanism does "A" represent?

Accepted Answer

A)   Hering-Breuer reflex
B)   receptors for touch, temperature, pain stimule
C)   medullary chemoreceptors
D)   carotid and aortic body chemoreceptors
E)   proprioceptorsF) A) and C)
G) C) and E)

Question 20

When 2,3-bisphosphoglycerate (BPG)  levels increase, hemoglobin

Accepted Answer

A)   releases less oxygen to tissues.
B)   releases more carbon dioxide to tissues.
C)   releases more oxygen to tissues.
D)   releases less carbon dioxide to tissues.
E)   None of these choices is correct.F) B) and E)
G) None of the above

Exam 23: Respiratory System

What is the function of the ciliated epithelium of the tracheobronchial tree?

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As temperature increases, how would this affect the oxyhemoglobin-dissociation curve?

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The olfactory epithelium responsible for the sense of smell is located in the

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The walls of the alveoli

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Which of the following factors keeps the alveoli expanded?

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__________ is the volume of air inspired during a normal inspiration.

Correct AnswerverifiedShow Answer

Mr. Huff and Puff exhales normally; then, using forced expiration, he exhales as much air as possible. The volume of air still remaining in his lungs is called

Correct AnswerverifiedShow Answer

-The diagram illustrates the major regulatory mechanisms of ventilation. What mechanism does "A" represent?

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Hemoglobin that has released its oxygen

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Air in the pleural cavity is called

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When 2,3-bisphosphoglycerate (BPG) levels increase, hemoglobin

Correct AnswerverifiedShow Answer

Match the disorder of the respiratory system with the best description. -cystic fibrosis

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Oxygen is transported in the blood

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The auditory tubes open into the

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What is the volume of air that can be forcibly expired after expiration of the tidal volume?

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During exercise, the oxygen-hemoglobin dissociation curve

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The trachea

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Rhythmicity of breathing involves

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Which of the following is NOT a process of respiration?

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Pulmonary edema will cause the rate of gas diffusion to

Correct AnswerverifiedShow Answer

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