Question 1

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

Accepted Answer

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

Question 2

From largest to smallest, the correct sequence for the following passageways is

Accepted Answer

A)   bronchi, bronchioles, respiratory bronchioles, terminal bronchioles, alveoli.
B)   bronchioles, terminal bronchioles, respiratory bronchioles, bronchi, alveoli.
C)   alveoli, bronchioles, terminal bronchioles, respiratory bronchioles, bronchi.
D)   bronchi, bronchioles, terminal bronchioles, respiratory bronchioles, alveoli.
E)   terminal bronchioles, respiratory bronchioles, bronchi, bronchioles, alveoli.F) B) and E)
G) B) and C)

Question 3

Use the following two choices.
-decrease in carbon dioxide

Accepted Answer

A)  oxygen-hemoglobin dissociation curve shifts to the right
B)  oxygen-hemoglobin dissociation curve shifts to the leftC) A) and B)
D) undefined

Question 4

-What does "D" represent on the diagram?

Accepted Answer

A)   larynx
B)   lungs
C)   trachea
D)   pharynx
E)   bronchiF) None of the above
G) B) and D)

Question 5

Match the term with the appropriate description, answer with the letter preceding the description.
-internal nares
"Enter the letter of the correct description below"

Accepted Answer

A)  the floor of the nasal cavity
B)  superior portion of pharynx
C)  a soft process that extends inferiorly from the posterior edge of the soft palate
D)  the opening of the nasal cavity into the pharynx
E)  external openings of the nasal cavityF) A) and E)
G) D) and E)

Question 6

-Which of the patients above might have a depression of the respiratory center due to drugs?

Accepted Answer

The answer of 
-Which of the patients above might have...

Question 7

Use the following key to determine the best answer.
-(1)  PO2 of arterial blood;
(2)  PO2 of intracellular fluid.

Accepted Answer

A)  Choose this if the first item is greater than the second item.
B)  Choose this if the first item is less than the second item.
C)  Choose this if the first item is equal or nearly equal to the second item.D) None of the above
E) A) and B)

Question 8

Whose law explains that an increase in volume causes a decrease in pressure?

Accepted Answer

A)   Henry's Law
B)   Dalton's Law
C)   Charles Law
D)   Boyles LawE) A) and B)
F) A) and C)

Question 9

Oxygenated blood is carried to the tissues of the lungs via the

Accepted Answer

A)   pulmonary veins.
B)   bronchial arteries.
C)   pulmonary artery.
D)   abdominal aorta.
E)   pleural arteries.F) None of the above
G) A) and E)

Question 10

Match the term with the appropriate description, answer with the letter preceding the description.
-nasopharynx
"Enter the letter of the correct description below"

Accepted Answer

A)  the floor of the nasal cavity
B)  superior portion of pharynx
C)  a soft process that extends inferiorly from the posterior edge of the soft palate
D)  the opening of the nasal cavity into the pharynx
E)  external openings of the nasal cavityF) C) and D)
G) A) and B)

Question 11

-The diagram illustrates the respiratory membrane. What layer is "C"?

Accepted Answer

A)   basement membrane of capillary endothelium
B)   capillary endothelium
C)   alveolar epithelium
D)   alveolar fluid
E)   basement of alveolar epitheliumF) A) and E)
G) All of the above

Question 12

The __________ zone extends from the trachea to the terminal bronchioles.

Accepted Answer

The answer of The __________ zone extends from the trachea...

Question 13

Use the following two choices.
-decrease blood pH

Accepted Answer

A)  oxygen-hemoglobin dissociation curve shifts to the right
B)  oxygen-hemoglobin dissociation curve shifts to the leftC) A) and B)
D) undefined

Question 14

Match the term with the appropriate description, answer with the letter preceding the description.
-external nares
"Enter the letter of the correct description below"

Accepted Answer

A)  the floor of the nasal cavity
B)  superior portion of pharynx
C)  a soft process that extends inferiorly from the posterior edge of the soft palate
D)  the opening of the nasal cavity into the pharynx
E)  external openings of the nasal cavityF) A) and B)
G) A) and C)

Question 15

Most oxygen is carried in the blood ______; but most carbon dioxide is ________.

Accepted Answer

A)   dissolved in plasma; associated with salt or acid
B)   bound to hemoglobin; associated with bicarbonate ions in the plasma
C)   combined with albumin; associated with carbonic acid
D)   bound to hemoglobin; bound to albumin
E)   bound to plasma proteins; carried as carbon dioxideF) A) and B)
G) A) and E)

Question 16

Calculate the alveolar ventilation if the tidal volume is 500 ml., the respiratory rate is 12/minute, and the anatomical dead space is 100 ml.

Accepted Answer

A)   1200 ml
B)   1800 ml
C)   4800 ml
D)   6000 ml
E)   7200 mlF) A) and D)
G) C) and D)

Question 17

Match the term with the appropriate description, answer with the letter preceding the description.
-hard palate
"Enter the letter of the correct description below"

Accepted Answer

A)  the floor of the nasal cavity
B)  superior portion of pharynx
C)  a soft process that extends inferiorly from the posterior edge of the soft palate
D)  the opening of the nasal cavity into the pharynx
E)  external openings of the nasal cavityF) A) and B)
G) B) and D)

Question 18

Which of the following events in the chloride shift occurs last?

Accepted Answer

A)   Carbon dioxide diffuses into a red blood cell.
B)   Carbonic acid dissociates to form bicarbonate and hydrogen ions.
C)   Bicarbonate ions diffuse into the plasma.
D)   CO2 and H2O  →\rightarrow→  H2CO3
E)   Carbonic acid dissociates to form water and carbon dioxide. F) All of the above
G) B) and C)

Question 19

Most carbon dioxide is transported in the blood

Accepted Answer

A)   in the form of bicarbonate ions.
B)   bound to hemoglobin.
C)   dissolved in the plasma.
D)   by the leukocytes.
E)   in the form of carbonic acid.F) C) and E)
G) B) and D)

Question 20

The chloride shift refers to the

Accepted Answer

A)   effect of chloride ions on the oxygen dissociation curve.
B)   exchange of chloride ions for bicarbonate ions across the red blood cell membrane.
C)   exchange of chloride ions for carbon dioxide across alveolar cell membranes.
D)   effect of chloride ions on hydrogen ion diffusion from red blood cells.
E)   exchange of chloride ions for hemoglobin across the RBC membrane.F) A) and E)
G) A) and D)

Exam 23: Respiratory System

Use the following two choices. -decrease in carbon dioxide

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Most carbon dioxide is transported in the blood

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

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-The diagram illustrates the respiratory membrane. What layer is "C"?

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The __________ zone extends from the trachea to the terminal bronchioles.

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Oxygenated blood is carried to the tissues of the lungs via the

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Match the term with the appropriate description, answer with the letter preceding the description. -internal nares "Enter the letter of the correct description below"

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Most oxygen is carried in the blood ______; but most carbon dioxide is ________.

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Whose law explains that an increase in volume causes a decrease in pressure?

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Match the term with the appropriate description, answer with the letter preceding the description. -hard palate "Enter the letter of the correct description below"

Correct AnswerverifiedShow Answer

Which of the following events in the chloride shift occurs last?

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-What does "D" represent on the diagram?

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Match the term with the appropriate description, answer with the letter preceding the description. -external nares "Enter the letter of the correct description below"

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From largest to smallest, the correct sequence for the following passageways is

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Match the term with the appropriate description, answer with the letter preceding the description. -nasopharynx "Enter the letter of the correct description below"

Correct AnswerverifiedShow Answer

-Which of the patients above might have a depression of the respiratory center due to drugs?

Correct AnswerverifiedShow Answer

Use the following two choices. -decrease blood pH

Correct AnswerverifiedShow Answer

The chloride shift refers to the

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Calculate the alveolar ventilation if the tidal volume is 500 ml., the respiratory rate is 12/minute, and the anatomical dead space is 100 ml.

Correct AnswerverifiedShow Answer

Use the following key to determine the best answer. -(1) PO2 of arterial blood; (2) PO2 of intracellular fluid.

Correct AnswerverifiedShow Answer

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Most oxygen is carried in the blood ; but most carbon dioxide is __.

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Use the following key to determine the best answer. -(1) PO₂ of arterial blood; (2) PO₂ of intracellular fluid.

Correct Answer
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