Question 1

Hemoglobin that has oxygen attached is called

Accepted Answer

A)   hemoglobin-oxygen complex.
B)   carbaminohemoglobin.
C)   oxyhemoglobin.
D)   deoxyhemoglobin.
E)   globoxygen.F) C) and E)
G) A) and E)

Question 2

Oxygen diffusion from the alveolus to the pulmonary capillary occurs because

Accepted Answer

A)   alveolar PO2 is greater than capillary PO2.
B)   oxygen diffuses faster than carbon dioxide.
C)   alveolar PCO2 is greater than capillary PCO2.
D)   alveolar PO2 is less than capillary PCO2.
E)   carbon dioxide diffuses faster than oxygen.F) All of the above
G) B) and D)

Question 3

Internal respiration refers to

Accepted Answer

A)   atmospheric air coming into the lungs.
B)   gas exchange between the lungs and the blood.
C)   gas exchange in the atmosphere.
D)   gas exchange between the blood and body tissues.
E)   cellular respiration.F) B) and D)
G) None of the above

Question 4

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

Accepted Answer

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

Question 5

Which of the following results in an increase in shunted blood (blood not completely oxygenated) ?

Accepted Answer

A)   exercise
B)   pulmonary edema
C)   increased heart rate
D)   increased respiration rate
E)   None of these choices is correct.F) A) and B)
G) A) and C)

Question 6

In which of the following sequences does PO2 progressively decrease?

Accepted Answer

A)   body tissue, arterial blood, alveolar air
B)   body tissue, alveolar air, arterial blood
C)   blood in aorta, atmospheric air, body tissues
D)   atmospheric air, blood in aorta, body tissues
E)   body tissue, aorta, alveolar airF) C) and D)
G) A) and C)

Question 7

Oxygen and carbon dioxide are exchanged across the respiratory membrane by the process of

Accepted Answer

A)   active transport.
B)   diffusion.
C)   filtration.
D)   osmosis.
E)   cotransport.F) A) and B)
G) B) and C)

Question 8

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 B)
G) B) and E)

Question 9

Which of the following will cause a decrease in the surface area of the respiratory membrane?

Accepted Answer

A)   emphysema
B)   tuberculosis
C)   pneumonia
D)   All of the choices will reduce surface area of the respiratory membraneE) A) and D)
F) A) and B)

Question 10

Increasing ventilation will increase the PO2 and decrease the PCO2, which promotes gas exchange.

Accepted Answer

A) True 
 B)False

Question 11

What occurs at the respiratory membrane?

Accepted Answer

A)   mucus removes debris
B)   gas exchange between the air and blood takes place
C)   macrophages accumulate to remove debris
D)   gas exchange between the blood and tissues takes placeE) A) and C)
F) C) and D)

Question 12

Gas exchange between the air in the lungs and the blood takes place in the

Accepted Answer

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

Question 13

Arrange the following in order from highest to lowest PO2. (1)  PO2 of pulmonary veins
(2)  PO2 of pulmonary artery
(3)  PO2 of alveolar air

Accepted Answer

A)   1, 2, 3
B)   2, 1, 3
C)   2, 3, 1
D)   3, 1, 2
E)   3, 2, 1F) C) and D)
G) A) and B)

Question 14

Physiological dead air space is anatomic dead space plus

Accepted Answer

A)   the residual volume.
B)   the volume of any alveoli where gas exchange is diminished.
C)   the volume of blood flowing to the lungs.
D)   the respiration rate.
E)   tidal volume.F) A) and B)
G) B) and E)

Question 15

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) A) and C)
E) A) and B)

Question 16

The largest division of each lung are _____, which are divided into _____.

Accepted Answer

A)   lobules; segments
B)   segments; lobules
C)   lobes; lobules
D)   segments; lobes
E)   lobes; segmentsF) A) and E)
G) None of the above

Question 17

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) C) and E)
G) A) and B)

Question 18

The nasal vestibule is located in the ______ portion of the nasal cavity.

Accepted Answer

A)   posterior
B)   exterior
C)   upper
D)   external
E)   anteriorF) D) and E)
G) A) and E)

Question 19

If there is an accumulation of acidic products in the plasma, one would expect

Accepted Answer

A)   an increase in respiration rate.
B)   a decrease in respiration rate.
C)   no influence on respiration rate.
D)   an increase in residual volume.
E)   apnea.F) C) and D)
G) A) and E)

Question 20

Which of the following statements concerning the dorsal and ventral respiratory groups is false?

Accepted Answer

A)   They are located in the reticular activating system.
B)   There is cross communication between these two groups.
C)   These groups establish the basic rate and depth of breathing.
D)   These groups increase the number of action potentials to the respiratory muscles during inspiration.
E)   Two dorsal and two ventral respiratory groups make up the medullary respiratory center.F) All of the above
G) C) and E)

Exam 23: Respiratory System

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

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Physiological dead air space is anatomic dead space plus

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Increasing ventilation will increase the PO2 and decrease the PCO2, which promotes gas exchange.

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Oxygen diffusion from the alveolus to the pulmonary capillary occurs because

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Which of the following statements concerning the dorsal and ventral respiratory groups is false?

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The largest division of each lung are _____, which are divided into _____.

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Gas exchange between the air in the lungs and the blood takes place in the

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The nasal vestibule is located in the ______ portion of the nasal cavity.

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Which of the following results in an increase in shunted blood (blood not completely oxygenated) ?

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

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Which of the following will cause a decrease in the surface area of the respiratory membrane?

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Hemoglobin that has oxygen attached is called

Correct AnswerverifiedShow Answer

Oxygen and carbon dioxide are exchanged across the respiratory membrane by the process of

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In which of the following sequences does PO2 progressively decrease?

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If there is an accumulation of acidic products in the plasma, one would expect

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

Correct AnswerverifiedShow Answer

What occurs at the respiratory membrane?

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Arrange the following in order from highest to lowest PO2. (1) PO2 of pulmonary veins (2) PO2 of pulmonary artery (3) PO2 of alveolar air

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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.

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Internal respiration refers to

Correct AnswerverifiedShow Answer

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Increasing ventilation will increase the PO₂ and decrease the PCO₂, which promotes gas exchange.

Correct Answer
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The largest division of each lung are _, which are divided into _.

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In which of the following sequences does PO₂ progressively decrease?

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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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Arrange the following in order from highest to lowest PO₂. (1) PO₂ of pulmonary veins (2) PO₂ of pulmonary artery (3) PO₂ of alveolar air

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