Question 1

Each alveolus is surrounded by a basket of blood capillaries supplied by

Accepted Answer

A)  the aorta.
B)  the pulmonary artery.
C)  the pulmonary vein.
D)  the inferior vena cava.
E)  the superior vena cava.F) A) and D)
G) B) and E)

Question 2

Which of the following would slow down gas exchange between the blood and alveolar air?

Accepted Answer

A)  an increase in membrane thickness
B)  an increase in alveolar surface area
C)  an increase in respiratory rate
D)  a decrease in membrane thickness
E)  a decrease in nitrogen solubilityF) A) and E)
G) B) and E)

Question 3

Your breathing rate is 12 breaths/minute; your tidal volume is 500 mL; your vital capacity is 4700 mL; and your dead air space is 150 mL.Your alveolar ventilation rate is mL/min.

Accepted Answer

A)  2,400
B)  3,600
C)  4,200
D)  5,600
E)  6,400F) D) and E)
G) C) and D)

Question 4

The blood transports more CO₂ in the form of than in any other form.

Accepted Answer

A)  carbaminohemoglobin
B)  carboxyhemoglobin
C)  bicarbonate ions
D)  dissolved CO₂ gas
E)  bisphosphocarbonateF) A) and E)
G) B) and C)

Question 5

Which two ligaments extend from the thyroid cartilage to the arytenoid cartilages?

Accepted Answer

A)  vestibular and vocal ligaments
B)  laryngeal and corniculate
C)  corniculate and cricoid
D)  cricoids and arytenoids
E)  thyrohyoid and cricoidsF) B) and D)
G) B) and C)

Question 6

A lung disease marked by abnormally few but large alveoli is

Accepted Answer

A)  cor pulmonale.
B)  pulmonary hemosiderosis.
C)  emphysema.
D)  atelectasis.
E)  collapsed lung.F) A) and C)
G) B) and D)

Question 7

Normally the systemic arterial blood has a PO₂ of mm Hg, a PcO₂ of mm Hg, and a pH of .

Accepted Answer

A)  40; 95; 7.4
B)  95; 40; 7.4
C)  7.4; 40; 95
D)  95; 7.4; 40
E)  40; 7.4; 95F) A) and E)
G) A) and C)

Question 8

Scuba divers breathe a nitrogen-oxygen mixture rather than pure compressed oxygen in order to avoid

Accepted Answer

A)  the bends.
B)  oxygen toxicity.
C)  rapture of the deep.
D)  caisson disease.
E)  hypoxemic hypoxia.F) C) and D)
G) A) and B)

Question 9

Among its other purposes, the Valsalva maneuver is used

Accepted Answer

A)  to aid in defecation and urination.
B)  as part of the procedure for giving CPR to a person in respiratory arrest.
C)  to ventilate the lungs during eupnea.
D)  to expel more than the usual tidal volume from the lungs.
E)  to clear carbon monoxide from the body and replace it with oxygen.F) None of the above
G) A) and E) A

Question 10

is a lung disease marked by a reduced number of cilia, reduced motility of the remaining cilia, goblet cell hypertrophy and hypersecretion, and thick sputum.

Accepted Answer

A)  Asthma
B)  Oat-cell carcinoma
C)  Atelectasis
D)  Chronic bronchitis
E)  EmphysemaF) B) and D)
G) A) and E)

Question 11

Which of the following enzymes in an RBC breaks H₂CO₃ down to water and carbon dioxide?

Accepted Answer

A)  hemoglobin
B)  carboxyhemoglobin
C)  carbonic anhydrase
D)  bisphosphoglycerate
E)  carbaminoreductaseF) C) and D)
G) A) and E)

Question 12

The pleurae and pleural fluid help prevent the spread of pulmonary infection to the pericardium.

Accepted Answer

A) True 
 B)False

Question 13

Deep, rapid breathing often seen in terminal diabetes mellitus is known as what?

Accepted Answer

A)  tachypnea
B)  dyspnea
C)  orthopnea
D)  hyperpnea
E)  Kussmaul respirationF) A) and B)
G) B) and E) E

Question 14

Erythrocytes do not carry out aerobic respiration; thus, they do not consume any of the oxygen they
are transporting.

Accepted Answer

A) True 
 B)False  True

Question 15

Which of the following is the term for a deficiency of oxygen or the inability to utilize oxygen in a tissue?

Accepted Answer

A)  apoxia
B)  hypoxia
C)  anoxia
D)  cyanosis
E)  eupneaF) B) and C)
G) A) and E)

Question 16

Hemoglobin releases the same amount of oxygen to all the tissues regardless of variations in their
metabolic rate.

Accepted Answer

A) True 
 B)False

Question 17

In one passage through a bed of systemic blood capillaries, the blood gives up about what percentage of its oxygen?

Accepted Answer

A)  5% to 10%
B)  10% to 15%
C)  20% to 25%
D)  30% to 40%
E)  70% to 85%F) A) and E)
G) D) and E)

Question 18

The upper respiratory tract extends

Accepted Answer

A)  from the nose through the trachea.
B)  from the nose through the pharynx.
C)  from the nose through the larynx.
D)  from the nose through the alveoli.
E)  from the nose through the lungs.F) C) and D)
G) A) and D)

Question 19

Which of the following has no effect on oxyhemoglobin dissociation?

Accepted Answer

A)  epinephrine
B)  fever
C)  thyroid hormone
D)  low pH
E)  erythrocyte countF) A) and B)
G) A) and E)

Question 20

The nose is divided into right and left halves termed the

Accepted Answer

A)  nasal cavities.
B)  nasal fossae.
C)  nasal septa.
D)  nasal vestibules.
E)  nasal apertures.F) B) and D)
G) B) and C)

Exam 22: The Respiratory System

Each alveolus is surrounded by a basket of blood capillaries supplied by

Correct AnswerverifiedShow Answer

Which of the following would slow down gas exchange between the blood and alveolar air?

Correct AnswerverifiedShow Answer

Your breathing rate is 12 breaths/minute; your tidal volume is 500 mL; your vital capacity is 4700 mL; and your dead air space is 150 mL.Your alveolar ventilation rate is mL/min.

Correct AnswerverifiedShow Answer

The blood transports more CO₂ in the form of than in any other form.

Correct AnswerverifiedShow Answer

Which two ligaments extend from the thyroid cartilage to the arytenoid cartilages?

Correct AnswerverifiedShow Answer

A lung disease marked by abnormally few but large alveoli is

Correct AnswerverifiedShow Answer

Normally the systemic arterial blood has a PO₂ of mm Hg, a PcO₂ of mm Hg, and a pH of .

Correct AnswerverifiedShow Answer

Scuba divers breathe a nitrogen-oxygen mixture rather than pure compressed oxygen in order to avoid

Correct AnswerverifiedShow Answer

Among its other purposes, the Valsalva maneuver is used

Correct AnswerverifiedA

is a lung disease marked by a reduced number of cilia, reduced motility of the remaining cilia, goblet cell hypertrophy and hypersecretion, and thick sputum.

Correct AnswerverifiedShow Answer

Which of the following enzymes in an RBC breaks H₂CO₃ down to water and carbon dioxide?

Correct AnswerverifiedShow Answer

The pleurae and pleural fluid help prevent the spread of pulmonary infection to the pericardium.

Correct AnswerverifiedShow Answer

Deep, rapid breathing often seen in terminal diabetes mellitus is known as what?

Correct AnswerverifiedE

Erythrocytes do not carry out aerobic respiration; thus, they do not consume any of the oxygen they are transporting.

Correct AnswerverifiedTrue

Which of the following is the term for a deficiency of oxygen or the inability to utilize oxygen in a tissue?

Correct AnswerverifiedShow Answer

Hemoglobin releases the same amount of oxygen to all the tissues regardless of variations in their metabolic rate.

Correct AnswerverifiedShow Answer

In one passage through a bed of systemic blood capillaries, the blood gives up about what percentage of its oxygen?

Correct AnswerverifiedShow Answer

The upper respiratory tract extends

Correct AnswerverifiedShow Answer

Which of the following has no effect on oxyhemoglobin dissociation?

Correct AnswerverifiedShow Answer

The nose is divided into right and left halves termed the

Correct AnswerverifiedShow Answer

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A

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True

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