Question 1

Laryngospasm is most likely to cause

Accepted Answer

A)   emphysema.
B)   pneumothorax.
C)   acute respiratory obstruction.
D)   asthma.

Question 2

Hyperventilation is most apt to induce

Accepted Answer

A)   alkalosis.
B)   hypoxemia.
C)   a decline in blood pH.
D)   metabolic acidosis.

Question 3

In which structure is the PO₂ 104 mm Hg?

Accepted Answer

A)   Pulmonary artery
B)   Alveolus
C)   Right ventricle
D)   Vena cava

Question 4

Which of the following represents a correct anatomical sequence?

Accepted Answer

A)   Larynx, laryngopharynx, trachea
B)   Oropharynx, laryngopharynx, larynx
C)   Larynx, pharynx, bronchi
D)   Voice box, windpipe, alveoli

Question 5

Which of the following is true of the lower respiratory tract?

Accepted Answer

A)   Contains the respiratory organs in the chest
B)   Contains all respiratory organs
C)   Contains all respiratory structures lined with mucous membrane
D)   Contains all organs distal to the larynx

Question 6

Which of the following occurs on exhalation?

Accepted Answer

A)   Respiratory expiratory neurons fire.
B)   The diaphragm relaxes.
C)   Thoracic volume decreases.
D)   All of the above occur.

Question 7

Which of the following best describes eupnea?

Accepted Answer

A)   Kussmaul respirations
B)   Vital capacity
C)   Normal, quiet breathing
D)   Hypoxemia

Question 8

Which respiratory muscles are located between the ribs?

Accepted Answer

A)   Diaphragm
B)   Bronchiolar smooth muscle
C)   Intercostals
D)   Sternocleidomastoids

Question 9

Surfactants

Accepted Answer

A)   are secreted by cells within the alveoli.
B)   increase surface tension.
C)   transport oxygen across the alveolar-pulmonary capillary membrane.
D)   relax the epiglottis so as prevent upper respiratory obstruction.

Question 10

Which of the following is most related to the transport of the respiratory gases by the blood?

Accepted Answer

A)   Inhalation, exhalation
B)   Oxyhemoglobin, carbaminohemoglobin
C)   Inspiration, expiration
D)   Breathing in, breathing out

Question 11

Which of the following is an upper respiratory structure?

Accepted Answer

A)   Alveoli
B)   Larynx
C)   Bronchi
D)   Bronchioles

Question 12

The central chemoreceptors are primarily sensitive to blood levels of

Accepted Answer

A)   oxygen.
B)   carbon dioxide and [H+].
C)   sodium.
D)   potassium.

Question 13

Which of the following contributes to the wheezing of asthma?

Accepted Answer

A)   Constriction of the bronchiolar smooth muscle
B)   Edema of the esophagus
C)   Inflammation of the trachea and pharynx
D)   Pneumothorax

Question 14

Hypoventilation can cause

Accepted Answer

A)   bleeding and hypotension.
B)   alkalosis and Kussmaul respirations.
C)   hypoxemia and acidosis.
D)   hyperglycemia and acidosis.

Question 15

The respiratory passages are lined with

Accepted Answer

A)   pleura.
B)   mucous membrane.
C)   serous membrane.
D)   muscle.

Question 16

Which structure is called the windpipe and is supported by rings of cartilage?

Accepted Answer

A)   Bronchus
B)   Alveolus
C)   Pharynx
D)   Trachea

Question 17

In reference to a normally expanded lung,the

Accepted Answer

A)   intrapulmonic pressure is less than intrapleural pressure.
B)   intrapleural pressure is greater than atmospheric pressure.
C)   intrapulmonic pressure is greater than intrapleural pressure.
D)   intrapleural, intrapulmonic, and atmospheric pressures are equal.

Question 18

Which of the following best describes the visceral and parietal pleura?

Accepted Answer

A)   Line the inner wall of the trachea and bronchi
B)   Line the mediastinum
C)   Are serous membranes that line the pleural cavity
D)   Are surfactant-secreting membranes

Question 19

The phrenic nerve fires.Which event occurs next?

Accepted Answer

A)   The inspiratory neurons fire.
B)   The diaphragm contracts.
C)   Air moves into the lungs.
D)   Thoracic volume decreases.

Question 20

The Adam's apple is

Accepted Answer

A)   cartilage.
B)   the epiglottis.
C)   the primary site of gas exchange.
D)   the pharynx.

Exam 22: Respiratory System

The central chemoreceptors are primarily sensitive to blood levels of

Correct AnswerverifiedShow Answer

Which of the following best describes eupnea?

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In reference to a normally expanded lung,the

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The phrenic nerve fires.Which event occurs next?

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Surfactants

Correct AnswerverifiedShow Answer

Hyperventilation is most apt to induce

Correct AnswerverifiedShow Answer

The respiratory passages are lined with

Correct AnswerverifiedShow Answer

In which structure is the PO₂ 104 mm Hg?

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Which of the following occurs on exhalation?

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Which of the following best describes the visceral and parietal pleura?

Correct AnswerverifiedShow Answer

Which respiratory muscles are located between the ribs?

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Which of the following is an upper respiratory structure?

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Hypoventilation can cause

Correct AnswerverifiedShow Answer

Which of the following contributes to the wheezing of asthma?

Correct AnswerverifiedShow Answer

Which of the following represents a correct anatomical sequence?

Correct AnswerverifiedShow Answer

The Adam's apple is

Correct AnswerverifiedShow Answer

Which of the following is most related to the transport of the respiratory gases by the blood?

Correct AnswerverifiedShow Answer

Which structure is called the windpipe and is supported by rings of cartilage?

Correct AnswerverifiedShow Answer

Which of the following is true of the lower respiratory tract?

Correct AnswerverifiedShow Answer

Laryngospasm is most likely to cause

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