Question 1

The involuntary, rhythmic activities that deliver and remove respiratory gases are regulated in the

Accepted Answer

A)   brainstem.
B)   midbrain.
C)   cerebellum.
D)   cerebral nuclei.
E)   occipital lobe of the brain.F) C) and D)
G) D) and E) A

Question 2

Exposure to irritants causes mucus production to

Accepted Answer

A)   increase.
B)   decrease.C) A) and B)
D) undefined

Question 3

Control of pulmonary ventilation. 
-In this sagittal section showing the upper respiratory tract, what bone does number 2 indicate?

Accepted Answer

A)   Frontal bone
B)   Nasal bone
C)   Maxillary bone
D)   Ethmoid bone
E)   Sphenoid boneF) C) and E)
G) A) and E)

Question 4

The alveolar cell that secretes pulmonary surfactant is the

Accepted Answer

A)   alveolar type II cell.
B)   alveolar type I cell.
C)   alveolar macrophage.
D)   dust cell.
E)   squamous alveolar cell.F) B) and E)
G) C) and D)

Question 5

At rest, a normal person breathes about ________ times per minute.

Accepted Answer

A)   8
B)   12
C)   26
D)   32
E)   50F) B) and E)
G) None of the above

Question 6

These muscles extend from a superior rib inferomedially to the adjacent inferior rib. They elevate the ribs upon contraction, thereby increasing the transverse dimensions of the thoracic cavity during inhalation.

Accepted Answer

A)   External intercostals
B)   Scalenes
C)   Transversus thoracis
D)   Internal intercostals
E)   Serratus posterior inferiorF) D) and E)
G) A) and C)

Question 7

Compared to its partial pressure in the atmosphere, oxygen's partial pressure in the alveoli is

Accepted Answer

A)   higher.
B)   lower.
C)   equivalent.D) A) and C)
E) B) and C)

Question 8

During quiet expiration,

Accepted Answer

A)   thoracic cavity volume decreases.
B)   the diaphragm and external intercostal muscles contract.
C)   inspiratory neurons in the VRG spontaneously depolarize.
D)   air moves from the atmosphere to the alveoli.E) None of the above
F) B) and D)

Question 9

Select all that can bind to the globin portion of hemoglobin.
A) Oxygen
B) Carbon dioxide
C) H+
D) Bicarbonate

Accepted Answer

Question 10

During expiration, relaxation of the diaphragm and external intercostals

Accepted Answer

A)   increases the volume of the thoracic cavity.
B)   increases the pressure in the thoracic cavity.
C)   expands the rib cage.
D)   flattens the floor of the thoracic cavity.
E)   stimulates the phrenic nerve.F) C) and E)
G) B) and E)

Question 11

Which of the following accounts for the loss of functional alveoli in an individual with a lung disease?

Accepted Answer

A)   Physiologic dead space
B)   Anatomic dead spaceC) A) and B)
D) undefined

Question 12

Pitch refers to the ________ of sound waves; pitch is determined by the tension produced by ________ laryngeal muscles.

Accepted Answer

A)   frequency; intrinsic
B)   frequency; extrinsic
C)   loudness; intrinsic
D)   loudness; extrinsicE) All of the above
F) C) and D)

Question 13

Airway obstruction can lead to hypoventilation, which can cause

Accepted Answer

A)   hypoxia and respiratory acidosis.
B)   hypocapnia and respiratory alkalosis.
C)   hypocapnia and hyperpnea.
D)   hypoxia and respiratory alkalosis.
E)   hypocapnia and respiratory acidosis.F) A) and C)
G) C) and D) A

Question 14

Which statement is true regarding secondary bronchi?

Accepted Answer

A)   The right lung has two secondary bronchi and the left lung has three secondary bronchi.
B)   The left lung has two secondary bronchi and the right lung has three secondary bronchi.
C)   Each lung has two secondary bronchi.
D)   Each lung has three secondary bronchi.
E)   Each lung has four secondary bronchi.F) A) and B)
G) A) and C)

Question 15

Bronchial arteries carry ________ blood to the tissues of the lung.

Accepted Answer

A)   oxygenated
B)   deoxygenatedC) A) and B)
D) undefined

Question 16

If someone at sea level is given pure oxygen to breathe, it would cause the oxygen saturation of their hemoglobin

Accepted Answer

A)   to increase by more than double.
B)   to increase by only a tiny amount.
C)   to decrease due to uncooperative binding.D) A) and B)
E) A) and C) B

Question 17

Breathing muscles such as the diaphragm are controlled by neurons of the ________ nervous system.

Accepted Answer

A)   somatic
B)   autonomic
C)   entericD) None of the above
E) All of the above

Question 18

The carotid bodies contain ________ chemoreceptors that respond to changes in ________.

Accepted Answer

A)   peripheral; blood concentrations of H+ and O2
B)   central; blood concentrations of H+, but not CO2 and O2
C)   peripheral; cerebrospinal fluid concentrations of H+
D)   central; cerebrospinal concentrations of CO2
E)   peripheral; concentrations of carbon, dust, and pollution in the lungsF) C) and D)
G) D) and E)

Question 19

The bronchial circulation is a component of the pulmonary circulation.

Accepted Answer

A) True 
 B)False

Question 20

Food is normally prevented from entering the nasopharynx by the

Accepted Answer

A)   elevation of the epiglottis.
B)   elevation of the soft palate.
C)   depression of the hard palate.
D)   closure of the nasal conchae.
E)   constriction of the esophagus.F) A) and B)
G) C) and D)

Exam 23: Respiratory System

The involuntary, rhythmic activities that deliver and remove respiratory gases are regulated in the

Correct AnswerverifiedA

Exposure to irritants causes mucus production to

Correct AnswerverifiedShow Answer

Control of pulmonary ventilation. -In this sagittal section showing the upper respiratory tract, what bone does number 2 indicate?

Correct AnswerverifiedShow Answer

The alveolar cell that secretes pulmonary surfactant is the

Correct AnswerverifiedShow Answer

At rest, a normal person breathes about ________ times per minute.

Correct AnswerverifiedShow Answer

These muscles extend from a superior rib inferomedially to the adjacent inferior rib. They elevate the ribs upon contraction, thereby increasing the transverse dimensions of the thoracic cavity during inhalation.

Correct AnswerverifiedShow Answer

Compared to its partial pressure in the atmosphere, oxygen's partial pressure in the alveoli is

Correct AnswerverifiedShow Answer

During quiet expiration,

Correct AnswerverifiedShow Answer

Select all that can bind to the globin portion of hemoglobin. A) Oxygen B) Carbon dioxide C) H+ D) Bicarbonate

Correct AnswerverifiedShow Answer

During expiration, relaxation of the diaphragm and external intercostals

Correct AnswerverifiedShow Answer

Which of the following accounts for the loss of functional alveoli in an individual with a lung disease?

Correct AnswerverifiedShow Answer

Pitch refers to the ________ of sound waves; pitch is determined by the tension produced by ________ laryngeal muscles.

Correct AnswerverifiedShow Answer

Airway obstruction can lead to hypoventilation, which can cause

Correct AnswerverifiedA

Which statement is true regarding secondary bronchi?

Correct AnswerverifiedShow Answer

Bronchial arteries carry ________ blood to the tissues of the lung.

Correct AnswerverifiedShow Answer

If someone at sea level is given pure oxygen to breathe, it would cause the oxygen saturation of their hemoglobin

Correct AnswerverifiedB

Breathing muscles such as the diaphragm are controlled by neurons of the ________ nervous system.

Correct AnswerverifiedShow Answer

The carotid bodies contain ________ chemoreceptors that respond to changes in ________.

Correct AnswerverifiedShow Answer

The bronchial circulation is a component of the pulmonary circulation.

Correct AnswerverifiedShow Answer

Food is normally prevented from entering the nasopharynx by the

Correct AnswerverifiedShow Answer

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Select all that can bind to the globin portion of hemoglobin. A) Oxygen B) Carbon dioxide C) H⁺ D) Bicarbonate

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Pitch refers to the of sound waves; pitch is determined by the tension produced by laryngeal muscles.

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A

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B

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The carotid bodies contain chemoreceptors that respond to changes in .

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