Question 1

Document the changes in the histology as the respiratory zone passageways decrease in diameter.

Accepted Answer

The C ^-shaped rings of cartilage become c...

Question 2

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 and where has the food lodged?

Accepted Answer

The inability to speak indicates that th...

Question 3

The partial pressure of oxygen 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)   35 mm Hg
B)   40 mm Hg
C)   104 mm Hg
D)   18 mm HgE) B) and C)
F) All of the above

Question 4

Which of the following accompanies emphysema?

Accepted Answer

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

Question 5

What sweeps foreign debris from the lower respiratory passages?

Accepted Answer

A)   cilia
B)   microvilli
C)   gap junctions
D)   flagellaE) A) and C)
F) A) and D)

Question 6

What is the advantage of breathing through the nose rather than the mouth?

Accepted Answer

A)   The nose provides a site for initial gas exchange.
B)   The nose is a less turbulent environment than the mouth.
C)   The nose provides a more direct route over which air will travel.
D)   The nose warms, humidifies, and filters inhaled air.E) A) and C)
F) A) and B)

Question 7

The most important stimulus that induces changes in ventilation is:

Accepted Answer

A)   partial pressure of oxygen in pulmonary capillaries.
B)   partial pressure of oxygen in venous blood.
C)   partial pressure of carbon dioxide in arterial blood.
D)   partial pressure of oxygen in systemic capillaries.E) B) and C)
F) B) and D)

Question 8

What is the chloride shift and why does it occur?

Accepted Answer

The chloride shift is an exchange of neg...

Question 9

What is the function of the goblet cells?

Accepted Answer

A)   detect odors
B)   maintain acid -base balance
C)   produce speech
D)   secrete mucusE) All of the above
F) C) and D)

Question 10

What primarily determines airway resistance in the respiratory passageways?

Accepted Answer

A)   degree of alveolar surface tension
B)   presence of surfactant
C)   diameter of the conducting zone passageways
D)   elasticity of the lung tissuesE) All of the above
F) A) and B)

Question 11

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)   Henry's law
C)   Boyle's law
D)   Dalton's lawE) None of the above
F) A) and B)

Question 12

Describe how and why the left and right primary bronchi are structurally different from one another.

Accepted Answer

The right primary bronchus is wider, sho...

Question 13

Terminal bronchioles, part of the conducting zone, give rise to respiratory bronchioles, which are part of the respiratory zone.

Accepted Answer

A) True 
 B)False

Question 14

Each lung is situated within a subcavity of the thoracic cavity known as the:

Accepted Answer

A)   pericardial cavity.
B)   peritoneal cavity.
C)   abdominopelvic cavity.
D)   pleural cavity.E) All of the above
F) B) and D)

Question 15

Surfactant helps prevent atelectasis by humidifying air before it enters the alveoli.

Accepted Answer

A) True 
 B)False

Question 16

The mucosa of the carina contains sensory receptors that trigger:

Accepted Answer

A)   hiccups.
B)   sneezing.
C)   yawning.
D)   coughing.E) None of the above
F) B) and C)

Question 17

Explain how smoking impairs the protective features of the epithelium of the respiratory tract.

Accepted Answer

Chemicals in cigarette smoke increase mu...

Question 18

The pharynx is known as the voice box due to the presence of vocal ligaments that vibrate to produce sound.

Accepted Answer

A) True 
 B)False

Question 19

What statement best describes tidal volume?

Accepted Answer

A)   Tidal volume is the air remaining in the lungs after forced expiration.
B)   Tidal volume is the air exchanged during normal breathing.
C)   Tidal volume is the air forcibly expelled after normal expiration.
D)   Tidal volume is the air exhaled after normal inspiration.E) None of the above
F) A) and D)

Question 20

Predict what happens to air movement when atmospheric pressure is 760 mm Hg, intrapulmonary pressure is 758 mm Hg, and intrapleural pressure is 754 mm Hg.

Accepted Answer

A)   inhalation
B)   no air movement
C)   atelectasis
D)   exhalationE) C) and D)
F) All of the above

Exam 21: The Respiratory System

The mucosa of the carina contains sensory receptors that trigger:

Correct AnswerverifiedShow Answer

What is the function of the goblet cells?

Correct AnswerverifiedShow Answer

Explain how smoking impairs the protective features of the epithelium of the respiratory tract.

Correct AnswerverifiedChemicals in cigarette smoke increase mu...View AnswerShow Answer

The partial pressure of oxygen 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

What is the advantage of breathing through the nose rather than the mouth?

Correct AnswerverifiedShow Answer

Predict what happens to air movement when atmospheric pressure is 760 mm Hg, intrapulmonary pressure is 758 mm Hg, and intrapleural pressure is 754 mm Hg.

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

The pharynx is known as the voice box due to the presence of vocal ligaments that vibrate to produce sound.

Correct AnswerverifiedShow Answer

Terminal bronchioles, part of the conducting zone, give rise to respiratory bronchioles, which are part of the respiratory zone.

Correct AnswerverifiedShow Answer

Which of the following accompanies emphysema?

Correct AnswerverifiedShow Answer

Describe how and why the left and right primary bronchi are structurally different from one another.

Correct AnswerverifiedThe right primary bronchus is wider, sho...View AnswerShow Answer

What statement best describes tidal volume?

Correct AnswerverifiedShow Answer

The most important stimulus that induces changes in ventilation is:

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

Document the changes in the histology as the respiratory zone passageways decrease in diameter.

Correct AnswerverifiedThe C -shaped rings of cartilage become c...View AnswerShow Answer

Surfactant helps prevent atelectasis by humidifying air before it enters the alveoli.

Correct AnswerverifiedShow Answer

What sweeps foreign debris from the lower respiratory passages?

Correct AnswerverifiedShow Answer

What primarily determines airway resistance in the respiratory passageways?

Correct AnswerverifiedShow Answer

Each lung is situated within a subcavity of the thoracic cavity known as the:

Correct AnswerverifiedShow 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 and where has the food lodged?

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

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
Chemicals in cigarette smoke increase mu...
View Answer

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

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
The right primary bronchus is wider, sho...
View Answer

Correct Answer
verified

Correct Answer
verified

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

Correct Answer
verified
The C ^-shaped rings of cartilage become c...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
The inability to speak indicates that th...
View Answer