Question 1

A fully saturated hemoglobin molecule transports:

Accepted Answer

A)  1 molecule of oxygen.
B)  4 molecules of oxygen.
C)  2 molecules of oxygen.
D)  8 molecules of oxygen.

Question 2

The upper respiratory tract includes the passageways from the nasal cavity to the larynx.

Accepted Answer

A) True 
 B)False

Question 3

Infants born prematurely do not make enough surfactant to prevent atelectasis.What role does surfactant play in preventing atelectasis? Explain how a lack of surfactant affects pulmonary ventilation.

Accepted Answer

Surfactant's role is to reduce alveolar ...

Question 4

Which of the following is NOT one of the four major processes of respiration?

Accepted Answer

A)  oxygen-hemoglobin dissociation curve
B)  gas transport
C)  pulmonary ventilation
D)  pulmonary gas exchange

Question 5

How is most oxygen transported in the blood?

Accepted Answer

A)  as carbonic acid in the plasma
B)  bound to hemoglobin as oxyhemoglobin
C)  combined with hemoglobin as carbaminohemoglobin
D)  as the bicarbonate ion in the plasma

Question 6

Respiratory acidosis results from:

Accepted Answer

A)  hypoxia.
B)  hypocapnia.
C)  hyperventilation.
D)  hypoventilation.

Question 7

Most inspired particles,such as dust,fail to reach the lungs because of the ciliated mucous membrane lining the upper respiratory structures.

Accepted Answer

A) True 
 B)False

Question 8

Each secondary bronchus supplies air to a:

Accepted Answer

A)  lobe of the lung.
B)  lobule of the lung.
C)  bronchopulmonary segment.
D)  hilum.

Question 9

A man eating in a restaurant chokes on a piece of food.He grabs his neck,unable to speak.Why is it significant that the man cannot talk? Where has the food lodged?

Accepted Answer

The inability to speak indicates that th...

Question 10

Carbon dioxide has a relatively high solubility in blood plasma although it has a very low partial pressure.What law describes this phenomenon?

Accepted Answer

A)  Charles' law
B)  Dalton's law
C)  Henry's law
D)  Boyle's law

Question 11

What is the chloride shift and why does it occur?

Accepted Answer

The chloride shift is an exchange of neg...

Question 12

Describe the functional difference between the conducting zone and the respiratory zone of the respiratory tract.

Accepted Answer

The tubes of the conducting zone transpo...

Question 13

Differentiate among atmospheric pressure,intrapulmonary pressure,and intrapleural pressure.

Accepted Answer

Atmospheric pressure is created by gravi...

Question 14

Five-year-old Charlie is so mad that he's holding his breath until he gets his way.What will stimulate his breathing rate to return to normal?

Accepted Answer

A)  lack of oxygen
B)  lack of sensory information being sent to central chemoreceptors
C)  lack of sensory information being sent to peripheral chemoreceptors
D)  accumulation of partial pressure of carbon dioxide (PCO2)

Question 15

Which of the following accompanies emphysema?

Accepted Answer

A)  pulmonary compliance decreases
B)  decreased partial pressure of carbon dioxide in the blood
C)  alveoli collapse and surface area is lost
D)  increase in vital capacity

Question 16

Which of the following is a factor on which expiration depends?

Accepted Answer

A)  contraction of expiratory muscles
B)  increase in lung volume
C)  recoil of elastic tissue in the lungs
D)  decrease in intrapulmonary pressure

Question 17

Mr.Carroll's broken rib pierced through his right lung causing air to enter the intrapleural space.What will happen to his lung,intrapleural pressure,and intrapulmonary pressure?

Accepted Answer

Air in the intrapleural space is known a...

Question 18

The partial pressure of oxygen (PO2) in a pulmonary capillary is about 40 mm Hg.Determine the partial pressure that will promote movement of oxygen into the pulmonary capillary from air in the alveolus.

Accepted Answer

A)  18 mm Hg
B)  104 mm Hg
C)  35 mm Hg
D)  40 mm Hg

Question 19

The partial pressure gradient of oxygen determines the direction of the movement of this respiratory gas.

Accepted Answer

A) True 
 B)False

Question 20

Julisa won a lottery ticket and began to hyperventilate in her excitement.Explain how hyperventilation affects the partial pressure of carbon dioxide in her blood and her blood pH.

Accepted Answer

Hyperventilation is the increase in the ...

Exam 21: The Respiratory System

The partial pressure gradient of oxygen determines the direction of the movement of this respiratory gas.

Correct AnswerverifiedShow Answer

What is the chloride shift and why does it occur?

Correct AnswerverifiedThe chloride shift is an exchange of neg...View AnswerShow Answer

Infants born prematurely do not make enough surfactant to prevent atelectasis.What role does surfactant play in preventing atelectasis? Explain how a lack of surfactant affects pulmonary ventilation.

Correct AnswerverifiedSurfactant's role is to reduce alveolar ...View AnswerShow Answer

Julisa won a lottery ticket and began to hyperventilate in her excitement.Explain how hyperventilation affects the partial pressure of carbon dioxide in her blood and her blood pH.

Correct AnswerverifiedHyperventilation is the increase in the ...View AnswerShow Answer

Mr.Carroll's broken rib pierced through his right lung causing air to enter the intrapleural space.What will happen to his lung,intrapleural pressure,and intrapulmonary pressure?

Correct AnswerverifiedAir in the intrapleural space is known a...View AnswerShow Answer

The upper respiratory tract includes the passageways from the nasal cavity to the larynx.

Correct AnswerverifiedShow Answer

Which of the following is a factor on which expiration depends?

Correct AnswerverifiedShow Answer

Differentiate among atmospheric pressure,intrapulmonary pressure,and intrapleural pressure.

Correct AnswerverifiedAtmospheric pressure is created by gravi...View AnswerShow Answer

Respiratory acidosis results from:

Correct AnswerverifiedShow Answer

Most inspired particles,such as dust,fail to reach the lungs because of the ciliated mucous membrane lining the upper respiratory structures.

Correct AnswerverifiedShow Answer

Carbon dioxide has a relatively high solubility in blood plasma although it has a very low partial pressure.What law describes this phenomenon?

Correct AnswerverifiedShow Answer

Which of the following is NOT one of the four major processes of respiration?

Correct AnswerverifiedShow Answer

How is most oxygen transported in the blood?

Correct AnswerverifiedShow Answer

Five-year-old Charlie is so mad that he's holding his breath until he gets his way.What will stimulate his breathing rate to return to normal?

Correct AnswerverifiedShow Answer

Which of the following accompanies emphysema?

Correct AnswerverifiedShow Answer

Each secondary bronchus supplies air to a:

Correct AnswerverifiedShow Answer

A fully saturated hemoglobin molecule transports:

Correct AnswerverifiedShow Answer

Describe the functional difference between the conducting zone and the respiratory zone of the respiratory tract.

Correct AnswerverifiedThe tubes of the conducting zone transpo...View AnswerShow Answer

A man eating in a restaurant chokes on a piece of food.He grabs his neck,unable to speak.Why is it significant that the man cannot talk? Where has the food lodged?

Correct AnswerverifiedThe inability to speak indicates that th...View AnswerShow Answer

The partial pressure of oxygen (PO2) in a pulmonary capillary is about 40 mm Hg.Determine the partial pressure that will promote movement of oxygen into the pulmonary capillary from air in the alveolus.

Correct AnswerverifiedShow Answer

Correct Answer
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The chloride shift is an exchange of neg...
View Answer

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Surfactant's role is to reduce alveolar ...
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Correct Answer
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Hyperventilation is the increase in the ...
View Answer

Correct Answer
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Air in the intrapleural space is known a...
View Answer

Correct Answer
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Correct Answer
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Correct Answer
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Atmospheric pressure is created by gravi...
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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The tubes of the conducting zone transpo...
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Correct Answer
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The inability to speak indicates that th...
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The partial pressure of oxygen (PO₂) in a pulmonary capillary is about 40 mm Hg.Determine the partial pressure that will promote movement of oxygen into the pulmonary capillary from air in the alveolus.

Correct Answer
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