Question 1

The thyroid cartilage is part of the __________.

Accepted Answer

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

Question 2

-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)  proprioceptors 
A)  Hering-Breuer reflex 
B)  receptors for touch, temperature, pain stimuli 
C)  medullary chemoreceptors 
D)  carotid and aortic body chemoreceptors 
E)  proprioceptors

Question 3

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 female 
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 female

Question 4

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. 
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.

Question 5

Apnea is the slowing of respiration as occurs during sleep.

Accepted Answer

A) True 
 B)False

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. 
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.

Question 7

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 membrane 
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 membrane

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)  epiglottis 
A)  paranasal sinuses 
B)  auditory tubes 
C)  lacrimal glands 
D)  fauces 
E)  epiglottis

Question 9

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)  shorter 
A)  longer 
B)  thinner 
C)  more vertical 
D)  less ciliated 
E)  shorter

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

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 edema 
A)  collapse of the alveoli 
B)  airway obstruction 
C)  emphysema 
D)  pulmonary fibrosis 
E)  pulmonary edema

Question 12

-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)  proprioceptors 
A)  Hering-Breuer reflex 
B)  receptors for touch, temperature, pain stimuli 
C)  medullary chemoreceptors 
D)  carotid and aortic body chemoreceptors 
E)  proprioceptors

Question 13

What type of alveolar cells produce surfactant?

Accepted Answer

A)  ciliated simple cuboidal epithelial cells 
B)  Type I pneumocytes 
C)  Type II pneumocytes 
D)  macrophages 
A)  ciliated simple cuboidal epithelial cells 
B)  Type I pneumocytes 
C)  Type II pneumocytes 
D)  macrophages

Question 14

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

Question 15

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. 
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.

Question 16

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. 
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.

Question 17

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 membrane 
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 membrane

Question 18

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. 
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.

Exam 23: Respiratory System

The thyroid cartilage is part of the __________.

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

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

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

Apnea is the slowing of respiration as occurs during sleep.

Expiration during quiet breathing

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

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

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.

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

In which of the following situations is compliance greatest?

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

What type of alveolar cells produce surfactant?

The serous membranes that surround the lungs are called the

During exercise, ventilation initially increases due to

Physiological dead air space is anatomic dead space plus

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

During expiration, the alveolar pressure must be

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