Question 1

Hemoglobin that has released its oxygen

Accepted Answer

A)  loses its affinity for oxygen.
B)  will dissolve in the plasma.
C)  will bind more readily to carbon dioxide.
D)  is broken down to heme and globin and excreted.
E)  will bind more readily to oxygen.F) A) and B)
G) None of the above

Question 2

During exercise,the oxygen-hemoglobin dissociation curve

Accepted Answer

A)  shifts to the right.
B)  shifts to the left.
C)  doesn't shift.D) None of the above
E) A) and B)

Question 3

A patient has severe pneumonia,which has thickened the respiratory membrane.Despite oxygen therapy,he still has rapid respiration and feels as if he is not getting enough air.This is because

Accepted Answer

A)  the oxygen increases the stimulation of the carotid and aortic bodies.
B)  the oxygen stimulates the respiratory center to increase the respiratory rate.
C)  his blood pH increased and stimulated an increase in his respiratory rate.
D)  even though he is receiving enough oxygen,carbon dioxide and hydrogen ions accumulate in his blood and cause the respiratory rate to continue to increase.
E)  oxygen cannot diffuse across the thickened membrane.F) C) and E)
G) All of the above

Question 4

Ventilation refers to the

Accepted Answer

A)  movement of air into and out of the lungs.
B)  gas exchange between the blood and the tissues.
C)  transportation of oxygen and carbon dioxide in the blood.
D)  gas exchange between the air in the lungs and the blood.
E)  respiration at the cellular level.F) A) and C)
G) A) and B)

Question 5

Of the following structures,the largest in diameter is the

Accepted Answer

A)  primary bronchus.
B)  secondary bronchus.
C)  respiratory bronchiole.
D)  trachea.
E)  tertiary bronchus.F) C) and D)
G) A) and B)

Question 6

During inspiration,contraction of the diaphragm causes the volume of Mr.Jones' thoracic cavity to increase and the pleural pressure to decrease.The pressure in his alveoli (Palv) will

Accepted Answer

A)  decrease below atmospheric pressure (P
B)  ,causing air to move out of his lungs.
B)  become greater than atmospheric pressure (P
B)  ,causing air to move into his lungs.
C)  decrease below atmospheric pressure (P
B)  ,causing air to move into his lungs.
D)  become greater than atmospheric pressure (P
B)  ,causing air to move out of his lungs.
E)  does not change.F) B) and C)
G) D) and E)

Question 7

The pontine respiratory neurons

Accepted Answer

A)  are located in the medulla oblongata in the brain.
B)  are active only during inspiration.
C)  are active only during expiration.
D)  play a role in switching between inspiration and expiration.
E)  is essential for respiratory rhythm.F) A) and D)
G) B) and D)

Question 8

The largest of the laryngeal cartilages is the

Accepted Answer

A)  epiglottis.
B)  thyroid cartilage.
C)  cricoid cartilage.
D)  corniculate cartilage.
E)  cuneiform cartilage.F) C) and D)
G) B) and E)

Question 9

Match the disorder of the respiratory system with the best description.
-emphysema

Accepted Answer

A)  destruction of the alveolar walls
B)  inflammation of the bronchii
C)  inherited disease that affects secretory cells lining the lungs
D)  replacement of lung tissue with fibrous connective tissue
E)  infant stops breathing during sleepF) D) and E)
G) None of the above

Question 10

What type of cells make up about 90% of the alveolar surface?

Accepted Answer

A)  ciliated simple squamous epithelial cells
B)  Type I pneumocytes
C)  Type II pneumocytes
D)  macrophagesE) A) and D)
F) A) and C)

Question 11

Mr.Smith hypoventilates and retains too much carbon dioxide.Which of the following receptors is stimulated by an increase in carbon dioxide?

Accepted Answer

A)  irritant receptors
B)  pressure receptors
C)  osmoreceptors
D)  peripheral chemoreceptors
E)  baroreceptorsF) None of the above
G) C) and D)

Question 12

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

Question 13

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) A) and C)
G) All of the above

Question 14

Which of the following statements concerning the larynx is correct?

Accepted Answer

A)  The larynx contains four unpaired cartilages.
B)  When the glottis closes,air is prevented from leaving the lungs.
C)  Unlike other portions of the larynx,the epiglottis consists of some bony tissue.
D)  The inferior laryngeal cartilage is the thyroid cartilage.
E)  The epiglottis is also called "Adam's apple".F) B) and E)
G) None of the above

Question 15

Which of the following is NOT part of the respiratory membrane?

Accepted Answer

A)  simple squamous epithelium of the alveolus and its basement membrane
B)  interstitial space
C)  pulmonary capillary simple squamous epithelium and its basement membrane
D)  thick layer of mucus lining the alveolusE) A) and D)
F) All of the above

Question 16

Which of the following statements is true?

Accepted Answer

A)  As thoracic volume increases,alveolar pressure (Palv) increases.
B)  In expiration,the thoracic volume increases.
C)  Constriction of bronchioles assists breathing.
D)  As alveolar volume increases,alveolar pressure (Palv) decreases.
E)  Pressure is directly proportional to volume.F) A) and B)
G) A) and C)

Question 17

Mr.Huff and Puff is getting ready to blow up a pool float because he can't find the air pump.He takes a big breath in after exhaling normally.The air he takes in is the

Accepted Answer

A)  inspiratory reserve volume.
B)  vital capacity.
C)  inspiratory capacity.
D)  tidal volume.E) A) and B)
F) None of the above

Question 18

Whenever people cry,their nose runs.This is because the _____ drain tears into the nose.

Accepted Answer

A)  nasolacrimal ducts
B)  paranasal sinuses
C)  lacrimal glands
D)  Wharten's ducts
E)  auditory tubeF) D) and E)
G) A) and E)

Question 19

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 C)
G) None of the above

Question 20

Which of the following results in an increase in shunted blood (blood not completely oxygenated) ?

Accepted Answer

A)  exercise
B)  pulmonary edema
C)  increased heart rate
D)  increased respiration rate
E)  None of these choices is correct.F) B) and D)
G) B) and C)

Exam 23: Respiratory System

The pontine respiratory neurons

Correct AnswerverifiedShow Answer

The largest of the laryngeal cartilages is the

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Ventilation refers to the

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A patient has severe pneumonia,which has thickened the respiratory membrane.Despite oxygen therapy,he still has rapid respiration and feels as if he is not getting enough air.This is because

Correct AnswerverifiedShow Answer

Which of the following results in an increase in shunted blood (blood not completely oxygenated) ?

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Which of the following is NOT part of the respiratory membrane?

Correct AnswerverifiedShow Answer

Match the disorder of the respiratory system with the best description. -emphysema

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

During inspiration,contraction of the diaphragm causes the volume of Mr.Jones' thoracic cavity to increase and the pleural pressure to decrease.The pressure in his alveoli (Palv) will

Correct AnswerverifiedShow Answer

Whenever people cry,their nose runs.This is because the _____ drain tears into the nose.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

During exercise,the oxygen-hemoglobin dissociation curve

Correct AnswerverifiedShow Answer

Hemoglobin that has released its oxygen

Correct AnswerverifiedShow Answer

Of the following structures,the largest in diameter is the

Correct AnswerverifiedShow Answer

Mr.Huff and Puff is getting ready to blow up a pool float because he can't find the air pump.He takes a big breath in after exhaling normally.The air he takes in is the

Correct AnswerverifiedShow Answer

Which of the following statements concerning the larynx is correct?

Correct AnswerverifiedShow Answer

Which of the following statements is true?

Correct AnswerverifiedShow Answer

What type of cells make up about 90% of the alveolar surface?

Correct AnswerverifiedShow Answer

Mr.Smith hypoventilates and retains too much carbon dioxide.Which of the following receptors is stimulated by an increase in carbon dioxide?

Correct AnswerverifiedShow Answer

The serous membranes that surround the lungs are called the

Correct AnswerverifiedShow Answer

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During inspiration,contraction of the diaphragm causes the volume of Mr.Jones' thoracic cavity to increase and the pleural pressure to decrease.The pressure in his alveoli (P_alv) will

Correct Answer
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