Question 1

The collection of mucus in the lower airways is most likely to cause

Accepted Answer

A)  laryngospasm. 
B)  pneumothorax. 
C)  atelectasis. 
D)  pharyngitis. 
A)  laryngospasm. 
B)  pneumothorax. 
C)  atelectasis. 
D)  pharyngitis. C

Question 2

A preterm infant is most likely to develop respiratory distress because of

Accepted Answer

A)  bacterial pneumonia. 
B)  a deficiency of surfactant. 
C)  excess mucus in the upper airways. 
D)  an inability of the immature diaphragm to contract. 
A)  bacterial pneumonia. 
B)  a deficiency of surfactant. 
C)  excess mucus in the upper airways. 
D)  an inability of the immature diaphragm to contract. B

Question 3

Which of the following is necessary for the lungs to remain expanded?

Accepted Answer

A)  The alveolar cells must secrete surfactant. 
B)  The intrapulmonic pressure must be negative. 
C)  The glottis must be closed. 
D)  The intrapleural pressure must be negative. 
A)  The alveolar cells must secrete surfactant. 
B)  The intrapulmonic pressure must be negative. 
C)  The glottis must be closed. 
D)  The intrapleural pressure must be negative. D

Question 4

Which of the following is the dome-shaped muscle that is the chief muscle of inhalation?

Accepted Answer

A)  Diaphragm 
B)  Epiglottis 
C)  Mediastinum 
D)  Pericardium 
A)  Diaphragm 
B)  Epiglottis 
C)  Mediastinum 
D)  Pericardium

Question 5

Which group is incorrect?

Accepted Answer

A)  Structures of the bronchial tree: trachea, bronchi, bronchioles, alveoli 
B)  Paranasal sinuses: frontal, maxillary, sphenoidal, ethmoidal 
C)  Structures of the upper respiratory tract: trachea, pharynx, larynx 
D)  Parts of the pharynx: oropharynx, nasopharynx, laryngopharynx 
A)  Structures of the bronchial tree: trachea, bronchi, bronchioles, alveoli 
B)  Paranasal sinuses: frontal, maxillary, sphenoidal, ethmoidal 
C)  Structures of the upper respiratory tract: trachea, pharynx, larynx 
D)  Parts of the pharynx: oropharynx, nasopharynx, laryngopharynx

Question 6

Which event occurs first?

Accepted Answer

A)  The diaphragm contracts. 
B)  Air moves into the lungs. 
C)  The phrenic nerve fires. 
D)  The inspiratory neurons in the medulla fire. 
A)  The diaphragm contracts. 
B)  Air moves into the lungs. 
C)  The phrenic nerve fires. 
D)  The inspiratory neurons in the medulla fire.

Question 7

Where is blood oxygenated?

Accepted Answer

A)  Within the left ventricle 
B)  Within the left anterior descending artery 
C)  Within the coronary sinus 
D)  Across the alveolus/pulmonary capillary membrane 
A)  Within the left ventricle 
B)  Within the left anterior descending artery 
C)  Within the coronary sinus 
D)  Across the alveolus/pulmonary capillary membrane

Question 8

Central and peripheral chemoreceptors (aortic and carotid bodies)

Accepted Answer

A)  are responsive only to hypoxemia. 
B)  are both sensitive to [H+] concentrations. 
C)  can regulate the rate and depth of respirations. 
D)  More than one of the above are true. 
A)  are responsive only to hypoxemia. 
B)  are both sensitive to [H+] concentrations. 
C)  can regulate the rate and depth of respirations. 
D)  More than one of the above are true.

Question 9

The Hering-Breuer reflex

Accepted Answer

A)  prevents overinflation of the lungs. 
B)  is a chemical reflex; no nerves are involved. 
C)  is important only in disease states. 
D)  is concerned only with sneezing and coughing. 
A)  prevents overinflation of the lungs. 
B)  is a chemical reflex; no nerves are involved. 
C)  is important only in disease states. 
D)  is concerned only with sneezing and coughing.

Question 10

Which of the following occurs on inhalation?

Accepted Answer

A)  Air moves into the intrapulmonic space. 
B)  Thoracic volume increases. 
C)  The diaphragm contracts. 
D)  All of the above occur. 
A)  Air moves into the intrapulmonic space. 
B)  Thoracic volume increases. 
C)  The diaphragm contracts. 
D)  All of the above occur.

Question 11

The trachea is

Accepted Answer

A)  "the problem" in asthma. 
B)  the site of gas exchange. 
C)  composed primarily of smooth muscle. 
D)  a large airway that splits into two bronchi. 
A)  "the problem" in asthma. 
B)  the site of gas exchange. 
C)  composed primarily of smooth muscle. 
D)  a large airway that splits into two bronchi.

Question 12

Which of the following represents a correct air flow?

Accepted Answer

A)  Bronchus to trachea to bronchioles 
B)  Trachea to bronchioles to alveoli 
C)  Bronchi to bronchioles to alveoli 
D)  Nasopharynx to larynx to bronchioles to bronchi 
A)  Bronchus to trachea to bronchioles 
B)  Trachea to bronchioles to alveoli 
C)  Bronchi to bronchioles to alveoli 
D)  Nasopharynx to larynx to bronchioles to bronchi

Question 13

Which group is incorrect?

Accepted Answer

A)  Pulmonary volumes: tidal, inspiratory reserve, expiratory reserve 
B)  Structures of the bronchial tree: bronchi, bronchioles, alveoli 
C)  Respiratory gases: oxygen, carbon dioxide 
D)  Parts of the pharynx: oropharynx, nasopharynx, laryngopharynx, bronchiopharynx 
A)  Pulmonary volumes: tidal, inspiratory reserve, expiratory reserve 
B)  Structures of the bronchial tree: bronchi, bronchioles, alveoli 
C)  Respiratory gases: oxygen, carbon dioxide 
D)  Parts of the pharynx: oropharynx, nasopharynx, laryngopharynx, bronchiopharynx

Question 14

The trachea branches into the right and left

Accepted Answer

A)  alveoli. 
B)  bronchi. 
C)  nares. 
D)  pulmonary arteries. 
A)  alveoli. 
B)  bronchi. 
C)  nares. 
D)  pulmonary arteries.

Question 15

Surfactants are found within the

Accepted Answer

A)  pulmonary capillaries. 
B)  trachea. 
C)  alveoli. 
D)  intrapleural space. 
A)  pulmonary capillaries. 
B)  trachea. 
C)  alveoli. 
D)  intrapleural space.

Question 16

Hypoventilation decreases the respiratory excretion of

Accepted Answer

A)  oxygen. 
B)  water. 
C)  carbon dioxide. 
D)  albumin. 
A)  oxygen. 
B)  water. 
C)  carbon dioxide. 
D)  albumin.

Question 17

Cartilaginous rings

Accepted Answer

A)  prevent the collapse of the trachea. 
B)  surround each alveolus. 
C)  are innervated by the phrenic nerve. 
D)  attach the diaphragm to the thoracic wall. 
A)  prevent the collapse of the trachea. 
B)  surround each alveolus. 
C)  are innervated by the phrenic nerve. 
D)  attach the diaphragm to the thoracic wall.

Question 18

Oxygen diffuses from the alveoli into the

Accepted Answer

A)  bronchioles. 
B)  trachea. 
C)  pulmonary capillaries. 
D)  eustachian tube. 
A)  bronchioles. 
B)  trachea. 
C)  pulmonary capillaries. 
D)  eustachian tube.

Question 19

As part of the respiratory structures,the oropharynx and laryngopharynx

Accepted Answer

A)  carry only air. 
B)  are located distal to the larynx. 
C)  carry food and water to the esophagus. 
D)  carry air to respiratory structures distal to the pharynx. 
A)  carry only air. 
B)  are located distal to the larynx. 
C)  carry food and water to the esophagus. 
D)  carry air to respiratory structures distal to the pharynx.

Question 20

The epiglottis,glottis,and vocal cords

Accepted Answer

A)  vibrate on exhalation, causing sound. 
B)  prevent the entrance of food and water into the respiratory passages. 
C)  are structures of the larynx. 
D)  are composed of tough cartilage. 
A)  vibrate on exhalation, causing sound. 
B)  prevent the entrance of food and water into the respiratory passages. 
C)  are structures of the larynx. 
D)  are composed of tough cartilage.

Exam 22: Respiratory System

The collection of mucus in the lower airways is most likely to cause

A preterm infant is most likely to develop respiratory distress because of

Which of the following is necessary for the lungs to remain expanded?

Which of the following is the dome-shaped muscle that is the chief muscle of inhalation?

Which group is incorrect?

Which event occurs first?

Where is blood oxygenated?

Central and peripheral chemoreceptors (aortic and carotid bodies)

The Hering-Breuer reflex

Which of the following occurs on inhalation?

The trachea is

Which of the following represents a correct air flow?

Which group is incorrect?

The trachea branches into the right and left

Surfactants are found within the

Hypoventilation decreases the respiratory excretion of

Cartilaginous rings

Oxygen diffuses from the alveoli into the

As part of the respiratory structures,the oropharynx and laryngopharynx

The epiglottis,glottis,and vocal cords

Introduction to the Human Body

Basic Chemistry

Cells

Cell Metabolism

Microbiology Basics

Tissues and Membranes

Integumentary System and Body Temperature

Skeletal System

Muscular System

Nervous System: Nervous Tissue and Brain

Nervous System: Spinal Cord and Peripheral Nerves

Autonomic Nervous System

Sensory System

Endocrine System

Blood

Anatomy of the Heart

Function of the Heart

Anatomy of the Blood Vessels

Functions of the Blood Vessels

Lymphatic System

Immune System

Digestive System

Urinary System

Water, Electrolyte, and Acid-Base Balance

Reproductive Systems

Human Development and Heredity

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