Question 1

What structure prevents food and drink from entering the trachea,conducts air,and produces sound

Accepted Answer

A)  Esophagus
B)  Bronchi
C)  Pharynx
D)  Nasal cavity
E)  LarynxF) A) and E)
G) B) and E)

Question 2

Suppose that following an automobile accident,a broken rib penetrates into the pleural cavity,causing air to accumulate in the space between the visceral and parietal pleura.This condition is known as a

Accepted Answer

A)  pneumothorax.
B)  tension hemothorax.
C)  hemothorax.
D)  cystic fibrosis.E) A) and D)
F) None of the above

Question 3

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 alkalosis..F) A) and D)
G) All of the above

Question 4

The amount of air that can be forcibly inhaled after a normal inspiration is the

Accepted Answer

A)  inspiratory reserve volume.
B)  inspiratory capacity.
C)  residual volume.
D)  functional residual capacity.E) A) and B)
F) B) and C)

Question 5

Another name for the nasal septum is the turbinate.

Accepted Answer

A) True 
 B)False

Question 6

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

Accepted Answer

A)  8
B)  12
C)  26
D)  32
E)  50F) C) and D)
G) B) and E)

Question 7

In a situation where one small bronchus is obstructed,the air in that segment of the lung will develop a high partial pressure of carbon dioxide and a low partial pressure of oxygen.What changes in ventilation and perfusion will occur in that segment in response to this condition

Accepted Answer

The changes in gas p...

Question 8

About 70% of the CO2that diffuses into systemic capillaries

Accepted Answer

A)  directly dissolves in the plasma.
B)  combines with water to form carbonic acid,which then dissociates into bicarbonate and hydrogen ions.
C)  binds to hemoglobin.
D)  forms carbonic anhydrase,which combines carbonic acid and water to solubilize the CO2.E) A) and D)
F) A) and C)

Question 9

About 23% of the carbon dioxide in the blood is attached to the _______ portion of hemoglobin.

Accepted Answer

A)  heme
B)  globin
C)  carboxyl
D)  anhydraseE) None of the above
F) A) and D)

Question 10

The epithelial lining of the oropharynx and the superior larynx (vocal cords)is nonkeratinized stratified squamous.

Accepted Answer

A) True 
 B)False

Question 11

The hilum of the lung

Accepted Answer

A)  is an indented area through which the bronchi,pulmonary vessels,lymphatic vessels,and nerves pass.
B)  is the point of exit of exhaled air.
C)  is the point of entrance for inhaled air.
D)  is an elevated area through which the trachea,pulmonary vessels,and nerves pass.
E)  serves to anchor all pulmonary structures to the mediastinum.F) All of the above
G) B) and E)

Question 12

-In this sagittal section showing the upper respiratory tract,what structure does number 4 indicate

Accepted Answer

A)  Uvula
B)  Soft palate
C)  Hard palate
D)  Nasal concha
E)  EpiglottisF) D) and E)
G) C) and D)

Question 13

Airflow is ________ related to the pressure gradient and __________ related to resistance.

Accepted Answer

A)  directly;directly
B)  directly;inversely
C)  inversely;inversely
D)  inversely;directlyE) C) and D)
F) B) and C)

Question 14

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 CO2and 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) B) and D)
G) B) and E)

Question 15

Hyperventilation leads to hypercapnia.

Accepted Answer

A) True 
 B)False

Question 16

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) B) and C)
F) None of the above

Question 17

-In this closeup image of a lung,what structure does number 2 indicate

Accepted Answer

A)  Respiratory bronchiole
B)  Alveolar duct
C)  Alveolus
D)  Terminal bronchiole
E)  BronchioleF) C) and D)
G) A) and B)

Question 18

The percentage of the vital capacity that can be exhaled during a specific time period is known as the

Accepted Answer

A)  tidal volume.
B)  alveolar ventilation.
C)  forced expiratory volume.
D)  maximal lung capacity rate.
E)  pulmonary minute ventilation.F) None of the above
G) All of the above

Question 19

Which statement accurately describes alveolar exchange of oxygen

Accepted Answer

A)  Oxygen diffuses from the alveolus to the blood because the alveolus has a higher partial pressure of oxygen.
B)  Oxygen diffuses from the alveolus to the blood because the alveolus has a lower partial pressure of oxygen.
C)  Oxygen diffuses from the blood to the alveolus because the alveolus has a higher partial pressure of oxygen.
D)  Oxygen diffuses from the blood to the alveolus because the alveolus has a lower partial pressure of oxygen.E) A) and B)
F) A) and D)

Question 20

When a partial pressure gradient exists for a gas,it will move from the area of its lower partial pressure to the area of higher partial pressure.

Accepted Answer

A) True 
 B)False

Exam 23: Respiratory System

Another name for the nasal septum is the turbinate.

Correct AnswerverifiedShow Answer

-In this sagittal section showing the upper respiratory tract,what structure does number 4 indicate

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Airflow is ________ related to the pressure gradient and __________ related to resistance.

Correct AnswerverifiedShow Answer

About 70% of the CO2that diffuses into systemic capillaries

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

In a situation where one small bronchus is obstructed,the air in that segment of the lung will develop a high partial pressure of carbon dioxide and a low partial pressure of oxygen.What changes in ventilation and perfusion will occur in that segment in response to this condition

Correct AnswerverifiedThe changes in gas p...View AnswerShow Answer

When a partial pressure gradient exists for a gas,it will move from the area of its lower partial pressure to the area of higher partial pressure.

Correct AnswerverifiedShow Answer

Which statement accurately describes alveolar exchange of oxygen

Correct AnswerverifiedShow Answer

The hilum of the lung

Correct AnswerverifiedShow Answer

The amount of air that can be forcibly inhaled after a normal inspiration is the

Correct AnswerverifiedShow Answer

Airway obstruction can lead to hypoventilation,which can cause

Correct AnswerverifiedShow Answer

The epithelial lining of the oropharynx and the superior larynx (vocal cords)is nonkeratinized stratified squamous.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

-In this closeup image of a lung,what structure does number 2 indicate

Correct AnswerverifiedShow Answer

The percentage of the vital capacity that can be exhaled during a specific time period is known as the

Correct AnswerverifiedShow Answer

Suppose that following an automobile accident,a broken rib penetrates into the pleural cavity,causing air to accumulate in the space between the visceral and parietal pleura.This condition is known as a

Correct AnswerverifiedShow Answer

The carotid bodies contain _________ chemoreceptors that respond to changes in ________________.

Correct AnswerverifiedShow Answer

Hyperventilation leads to hypercapnia.

Correct AnswerverifiedShow Answer

What structure prevents food and drink from entering the trachea,conducts air,and produces sound

Correct AnswerverifiedShow Answer

About 23% of the carbon dioxide in the blood is attached to the _______ portion of hemoglobin.

Correct AnswerverifiedShow Answer

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Airflow is related to the pressure gradient and __ related to resistance.

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About 70% of the CO₂that diffuses into systemic capillaries

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

Correct Answer
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The changes in gas p...
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The carotid bodies contain _ chemoreceptors that respond to changes in ________.

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