Question 1

What is the function of alveolar pores?

Accepted Answer

A)  equalize pressure in the lungs
B)  a portal for diapedesis
C)  speed the rate of diffusion
D)  allow for nutrients to reach the alveolar cells
E)  allow for exhalation of H2O formed during cellular respirationF) C) and E)
G) A) and B)

Question 2

Internal respiration refers to the use of oxygen and production of carbon dioxide by cells.

Accepted Answer

A) True 
 B)False

Question 3

What keeps the visceral pleura in close proximity to the parietal pleura?

Accepted Answer

A)  surface tension of the intrapleural fluid
B)  the mesothelia are one and the same
C)  trans- alveolar pressure
D)  positive pressure in the intrapleural space
E)  spider web- like processes extending from the outer coveringF) C) and D)
G) A) and B)

Question 4

What happens to a dust particle that is too small to fall from the inspired air and land in the alveoli?

Accepted Answer

A)  It lands in the mucociliary ladder, where type II macrophages phagocytize it.
B)  It lands in the mucociliary ladder, where it is moved to the trachea to be exhaled.
C)  It lands in the bronchi, where it is absorbed.
D)  It is inhaled and then exhaled.
E)  It lands in the respiratory bronchiole, where it is coughed outF) A) and B)
G) A) and D)

Question 5

Pressure is the driving force for the movement of air into and out of the lungs. However, the development of pressure and the movement of air is modified by the compliance of the lungs. Describe how lung compliance can alter the movement of air into the lungs.

Accepted Answer

The concept of lung compliance is the sa...

Question 6

Which of the following pressures is lower during inspiration than during expiration?

Accepted Answer

A)  intra- alveolar pressure only
B)  transpulmonary pressure only
C)  intrapleural pressure only
D)  both intra- alveolar and transpulmonary pressures
E)  both intra- alveolar and intrapleural pressuresF) B) and C)
G) B) and D)

Question 7

What are the primary inspiratory muscles?

Accepted Answer

A)  diaphragm and the external and internal intercostals
B)  diaphragm and abdominal muscles
C)  external and internal intercostals
D)  diaphragm and internal intercostals
E)  diaphragm and external intercostalsF) D) and E)
G) C) and D)

Question 8

A normal tidal volume at rest is approximately mL.

Accepted Answer

A)  100
B)  5000
C)  10,000
D)  500
E)  1000F) B) and D)
G) C) and D)

Question 9

Which of the following is NOT a function of the respiratory system?

Accepted Answer

A)  enhancing venous return
B)  heat loss
C)  electrolyte balance of blood
D)  vocalization
E)  acid- base balance of bloodF) C) and E)
G) B) and D)

Question 10

Which of the following becomes more abundant deeper into the conducting zone (from bronchi to bronchioles) ?

Accepted Answer

A)  goblet cells
B)  cartilage
C)  type I alveolar cells
D)  smooth muscle
E)  ciliaF) All of the above
G) A) and C)

Question 11

Transpulmonary pressure is the difference between intra- alveolar pressure and intrapleural pressure.

Accepted Answer

A) True 
 B)False

Question 12

Which of the following measurements cannot be determined by a spirometer?

Accepted Answer

A)  inspiratory reserve volume
B)  vital capacity
C)  tidal volume
D)  inspiratory capacity
E)  residual volumeF) C) and D)
G) A) and B)

Question 13

What is the significance of the respiratory membrane to facilitate gas exchange?

Accepted Answer

A)  All three surfaces are kept moist through interstitial fluid exchange.
B)  Epithelial and endothelial cells share a common basement membrane.
C)  The surface area is increased with this membrane.
D)  Its thickness prohibits the alveoli from pulling away from the capillary.
E)  It is covered with surfactant to accelerate gas exchange.F) B) and D)
G) A) and E)

Question 14

Which cells secrete mucus?

Accepted Answer

A)  ciliated cells
B)  goblet cells
C)  type II alveolar cells
D)  alveolar macrophages
E)  type I alveolar cellsF) C) and D)
G) B) and D)

Question 15

Alveolar macrophages function to engulf pathogens and foreign particles that have been inhaled into the lungs.

Accepted Answer

A) True 
 B)False

Question 16

The (epiglottis / glottis)is a flap of tissue that prevents food from entering the larynx.

Accepted Answer

The answer of The (epiglottis / glottis)is a flap of...

Question 17

The tidal volume and inspiratory reserve volume together make up which of the following?

Accepted Answer

A)  inspiratory capacity
B)  functional residual capacity
C)  total lung capacity
D)  residual volume
E)  vital capacityF) B) and E)
G) C) and E)

Question 18

What is the function of ciliated cells in the conducting zone?

Accepted Answer

A)  produce a viscous solution called mucus
B)  engulf foreign material that has been trapped within the mucus
C)  move macrophages down the conducting zone toward the respiratory zone
D)  provide the rigid support that keeps the conducting zone open
E)  propel mucus containing trapped particles toward the glottisF) B) and E)
G) None of the above

Question 19

As the lungs expand, intra- alveolar pressure and air moves the lungs.

Accepted Answer

A)  decreases : out of
B)  increases : out of
C)  increases : into
D)  decreases : into
E)  does not change : neither into nor out ofF) A) and D)
G) C) and D)

Question 20

Which of the following is NOT part of the response of an airway to specific allergens that initiate an asthmatic response?

Accepted Answer

A)  increased inflammatory response
B)  increased secretion of mucus
C)  increased airway resistance
D)  increased histamine release
E)  increased release of corticosteroidsF) None of the above
G) A) and D)

Exam 16: The Respiratory System: Pulmonary Ventilation

The (epiglottis / glottis)is a flap of tissue that prevents food from entering the larynx.

Correct AnswerverifiedShow Answer

Which of the following pressures is lower during inspiration than during expiration?

Correct AnswerverifiedShow Answer

Which cells secrete mucus?

Correct AnswerverifiedShow Answer

What is the function of alveolar pores?

Correct AnswerverifiedShow Answer

A normal tidal volume at rest is approximately mL.

Correct AnswerverifiedShow Answer

Alveolar macrophages function to engulf pathogens and foreign particles that have been inhaled into the lungs.

Correct AnswerverifiedShow Answer

Transpulmonary pressure is the difference between intra- alveolar pressure and intrapleural pressure.

Correct AnswerverifiedShow Answer

Which of the following is NOT part of the response of an airway to specific allergens that initiate an asthmatic response?

Correct AnswerverifiedShow Answer

Internal respiration refers to the use of oxygen and production of carbon dioxide by cells.

Correct AnswerverifiedShow Answer

The tidal volume and inspiratory reserve volume together make up which of the following?

Correct AnswerverifiedShow Answer

What are the primary inspiratory muscles?

Correct AnswerverifiedShow Answer

Which of the following measurements cannot be determined by a spirometer?

Correct AnswerverifiedShow Answer

What keeps the visceral pleura in close proximity to the parietal pleura?

Correct AnswerverifiedShow Answer

Which of the following becomes more abundant deeper into the conducting zone (from bronchi to bronchioles) ?

Correct AnswerverifiedShow Answer

Pressure is the driving force for the movement of air into and out of the lungs. However, the development of pressure and the movement of air is modified by the compliance of the lungs. Describe how lung compliance can alter the movement of air into the lungs.

Correct AnswerverifiedThe concept of lung compliance is the sa...View AnswerShow Answer

What is the function of ciliated cells in the conducting zone?

Correct AnswerverifiedShow Answer

Which of the following is NOT a function of the respiratory system?

Correct AnswerverifiedShow Answer

What happens to a dust particle that is too small to fall from the inspired air and land in the alveoli?

Correct AnswerverifiedShow Answer

As the lungs expand, intra- alveolar pressure and air moves the lungs.

Correct AnswerverifiedShow Answer

What is the significance of the respiratory membrane to facilitate gas exchange?

Correct AnswerverifiedShow Answer

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The concept of lung compliance is the sa...
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