Question 1

-The diagram illustrates the major regulatory mechanisms of ventilation. What mechanism does "E" 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 E)
G) C) and E)

Question 2

When people aspirate liquids or food into their lungs, the liquid or food most commonly enters the right lung rather than the left lung. This is because the right primary bronchus is __________ than the left primary bronchus.

Accepted Answer

A)   longer
B)   thinner
C)   more vertical
D)   less ciliated
E)   shorterF) C) and D)
G) A) and B)

Question 3

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) B) and E)

Question 4

During exercise, ventilation initially increases due to

Accepted Answer

A)   increased blood carbon dioxide levels stimulating baroreceptors.
B)   decreased blood oxygen levels stimulating chemoreceptors.
C)   decreased blood pH levels stimulating baroreceptors.
D)   limb movements that stimulate the respiratory center.
E)   abrupt changes in metabolism or blood gases.F) D) and E)
G) None of the above

Question 5

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) None of the above
G) A) and E)

Question 6

Expiration during quiet breathing

Accepted Answer

A)   is an active process.
B)   requires more muscle contractions than inspiration.
C)   is due to contraction of the diaphragm and elevation of the ribs.
D)   occurs when the diaphragm and external intercostal muscles relax.
E)   is not affected by the elastic properties of the lungs.F) A) and D)
G) All of the above

Question 7

The serous membranes that surround the lungs are called the

Accepted Answer

A)   mucous membranes.
B)   synovial membranes.
C)   pleural membranes.
D)   peritoneal membranes.
E)   pulmonary membranes.F) A) and B)
G) A) and C)

Question 8

Which of the following structures opens directly into the nasal cavity?

Accepted Answer

A)   paranasal sinuses
B)   auditory tubes
C)   lacrimal glands
D)   fauces
E)   epiglottisF) A) and E)
G) All of the above

Question 9

Apnea is the slowing of respiration as occurs during sleep.

Accepted Answer

A) True 
 B)False

Question 10

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

Accepted Answer

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

Question 11

In which of the following situations is compliance greatest?

Accepted Answer

A)   collapse of the alveoli
B)   airway obstruction
C)   emphysema
D)   pulmonary fibrosis
E)   pulmonary edemaF) A) and E)
G) A) and B)

Question 12

During expiration, the alveolar pressure must be

Accepted Answer

A)   greater than atmospheric pressure.
B)   less than atmospheric pressure.
C)   equal to atmospheric pressure.
D)   greater than pleural pressure.
E)   None of these choices is correct.F) A) and C)
G) D) and E)

Question 13

The thyroid cartilage is part of the __________.

Accepted Answer

The answer of The thyroid cartilage is part of the...

Question 14

What type of alveolar cells produce surfactant?

Accepted Answer

A)   ciliated simple cuboidal epithelial cells
B)   Type I pneumocytes
C)   Type II pneumocytes
D)   macrophagesE) None of the above
F) All of the above

Question 15

Which of the following individuals will have the highest vital capacity?

Accepted Answer

A)   a well-trained athlete (male or female) 
B)   a middle-aged, short female
C)   an 80-year-old male
D)   a young, obese male
E)   an adult femaleF) C) and D)
G) None of the above

Question 16

-The diagram illustrates the major regulatory mechanisms of ventilation. What mechanism does "B" 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) C) and E)
G) All of the above

Question 17

Which of the following is NOT a factor that influences the rate of gas diffusion through the respiratory membrane?

Accepted Answer

A)   the partial pressure gradient of the gases
B)   the thickness of the respiratory membrane
C)   the diffusion coefficient of the gases
D)   the temperature of the gases
E)   the surface area of the membraneF) A) and E)
G) B) and D)

Question 18

Which of the following increases the rate of gas exchange across the respiratory membrane?

Accepted Answer

A)   increased fluid in the alveoli
B)   increased thickness of the respiratory membrane
C)   increased surface area of the respiratory membrane
D)   increased connective tissue in the alveolar wall
E)   decreased surface area of the respiratory membraneF) A) and B)
G) A) and C)

Exam 23: Respiratory System

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

Correct Answer
verified

Physiological dead air space is anatomic dead space plus

Correct Answer
verified

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

Correct Answer
verified

Which of the following structures opens directly into the nasal cavity?

Correct Answer
verified

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

Correct Answer
verified

Apnea is the slowing of respiration as occurs during sleep.

Correct Answer
verified

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

Correct Answer
verified

Which of the following is NOT a factor that influences the rate of gas diffusion through the respiratory membrane?

Correct Answer
verified

Which of the following individuals will have the highest vital capacity?

Correct Answer
verified

During exercise, ventilation initially increases due to

Correct Answer
verified

Expiration during quiet breathing

Correct Answer
verified

When people aspirate liquids or food into their lungs, the liquid or food most commonly enters the right lung rather than the left lung. This is because the right primary bronchus is __________ than the left primary bronchus.

Correct Answer
verified

During expiration, the alveolar pressure must be

Correct Answer
verified

Which of the following increases the rate of gas exchange across the respiratory membrane?

Correct Answer
verified

What type of alveolar cells produce surfactant?

Correct Answer
verified

The thyroid cartilage is part of the __________.

Correct Answer
verified

The serous membranes that surround the lungs are called the

Correct Answer
verified

In which of the following situations is compliance greatest?

Correct Answer
verified

Exam 23: Respiratory System

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

Correct AnswerverifiedShow Answer

Physiological dead air space is anatomic dead space plus

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Which of the following structures opens directly into the nasal cavity?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Apnea is the slowing of respiration as occurs during sleep.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Which of the following is NOT a factor that influences the rate of gas diffusion through the respiratory membrane?

Correct AnswerverifiedShow Answer

Which of the following individuals will have the highest vital capacity?

Correct AnswerverifiedShow Answer

During exercise, ventilation initially increases due to

Correct AnswerverifiedShow Answer

Expiration during quiet breathing

Correct AnswerverifiedShow Answer

When people aspirate liquids or food into their lungs, the liquid or food most commonly enters the right lung rather than the left lung. This is because the right primary bronchus is __________ than the left primary bronchus.

Correct AnswerverifiedShow Answer

During expiration, the alveolar pressure must be

Correct AnswerverifiedShow Answer

Which of the following increases the rate of gas exchange across the respiratory membrane?

Correct AnswerverifiedShow Answer

What type of alveolar cells produce surfactant?

Correct AnswerverifiedShow Answer

The thyroid cartilage is part of the __________.

Correct AnswerverifiedShow Answer

The serous membranes that surround the lungs are called the

Correct AnswerverifiedShow Answer

In which of the following situations is compliance greatest?

Correct AnswerverifiedShow Answer

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