Question 1

What is the effect of an overdose of an opioid (narcotic)?

Accepted Answer

A)  Alters the shape of the hemoglobin so that it cannot bind to oxygen 
B)  Depresses the medulla oblongata and depresses ventilation 
C)  Causes spasm of the epiglottis resulting in an upper airway obstruction 
D)  Causes hyperventilation and alkalosis 
A)  Alters the shape of the hemoglobin so that it cannot bind to oxygen 
B)  Depresses the medulla oblongata and depresses ventilation 
C)  Causes spasm of the epiglottis resulting in an upper airway obstruction 
D)  Causes hyperventilation and alkalosis

Question 2

"Clubbing" of the fingers is a response to

Accepted Answer

A)  chronic hypoxemia. 
B)  CO2 retention and acidosis. 
C)  acute hyperventilation in response to metabolic acidosis. 
D)  chronic dry hacking cough. 
A)  chronic hypoxemia. 
B)  CO2 retention and acidosis. 
C)  acute hyperventilation in response to metabolic acidosis. 
D)  chronic dry hacking cough.

Question 3

A tracheostomy is performed in order to

Accepted Answer

A)  ensure an open airway. 
B)  humidify inhaled air. 
C)  administer high dose oxygen into the laryngopharynx. 
D)  introduce food and water into the esophagus and stomach. 
A)  ensure an open airway. 
B)  humidify inhaled air. 
C)  administer high dose oxygen into the laryngopharynx. 
D)  introduce food and water into the esophagus and stomach.

Question 4

What is the effect of phrenic nerve stimulation?

Accepted Answer

A)  Expiration 
B)  Relaxation of the diaphragm and the intercostals 
C)  Inhalation 
D)  A decrease in chest diameter 
A)  Expiration 
B)  Relaxation of the diaphragm and the intercostals 
C)  Inhalation 
D)  A decrease in chest diameter

Question 5

Pleural membranes

Accepted Answer

A)  line the inside of the lungs. 
B)  secrete surfactants. 
C)  secrete mucus and other viscous secretions to minimize friction between the pleural membranes. 
D)  are serous membranes. 
A)  line the inside of the lungs. 
B)  secrete surfactants. 
C)  secrete mucus and other viscous secretions to minimize friction between the pleural membranes. 
D)  are serous membranes.

Question 6

As plasma PCO₂ increases,

Accepted Answer

A)  hemoglobin synthesis increases. 
B)  ventilation increases. 
C)  vital capacity increases. 
D)  respirations cease. 
A)  hemoglobin synthesis increases. 
B)  ventilation increases. 
C)  vital capacity increases. 
D)  respirations cease.

Question 7

What will happen under the following conditions: the pO₂ is 95 mm Hg (arterial blood)and 40 mm Hg (tissue)?

Accepted Answer

A)  Oxygen diffuses from the tissues into the blood. 
B)  Blood pH shifts from an acid to an alkaline range. 
C)  Carbon dioxide diffuses from the blood to the tissues. 
D)  Oxygen diffuses from the blood to the tissues. 
A)  Oxygen diffuses from the tissues into the blood. 
B)  Blood pH shifts from an acid to an alkaline range. 
C)  Carbon dioxide diffuses from the blood to the tissues. 
D)  Oxygen diffuses from the blood to the tissues.

Question 8

Which of the following is most likely to cause hypoxemia?

Accepted Answer

A)  Kussmaul respirations 
B)  Hyperventilation 
C)  Medullary depression 
D)  Brain stem stimulation 
A)  Kussmaul respirations 
B)  Hyperventilation 
C)  Medullary depression 
D)  Brain stem stimulation

Question 9

Which of the following is the major regulator of respiratory activity?

Accepted Answer

A)  PO2 
B)  PCO2 
C)  Bicarbonate 
D)  Albumin 
A)  PO2 
B)  PCO2 
C)  Bicarbonate 
D)  Albumin

Question 10

What causes a boy's voice to "break" or change at the onset of puberty?

Accepted Answer

A)  Rapid growth of the throat region stretches the vocal cords. 
B)  Testosterone causes the vocal cords to thicken. 
C)  Testosterone closes the glottis permanently. 
D)  Testosterone enlarges the thyroid cartilage (Adam's apple). 
A)  Rapid growth of the throat region stretches the vocal cords. 
B)  Testosterone causes the vocal cords to thicken. 
C)  Testosterone closes the glottis permanently. 
D)  Testosterone enlarges the thyroid cartilage (Adam's apple).

Question 11

A deficiency of surfactants in the neonate

Accepted Answer

A)  makes it difficult to expand the lungs. 
B)  decreases alveolar surface tension. 
C)  causes epiglottal swelling and laryngospasm. 
D)  causes upper airway irritation. 
A)  makes it difficult to expand the lungs. 
B)  decreases alveolar surface tension. 
C)  causes epiglottal swelling and laryngospasm. 
D)  causes upper airway irritation.

Question 12

Which of the following is most likely to stimulate coughing that may be accompanied by a life-threatening bradycardia?

Accepted Answer

A)  Suctioning of the lower airways 
B)  Administration of albuterol (a beta2-adrenergic agonist) via inhalation 
C)  Administration of O2 via nasal cannula 
D)  Performance of a thoracentesis 
A)  Suctioning of the lower airways 
B)  Administration of albuterol (a beta2-adrenergic agonist) via inhalation 
C)  Administration of O2 via nasal cannula 
D)  Performance of a thoracentesis

Question 13

Which nerve innervates the diaphragm?

Accepted Answer

A)  Intercostal nerve 
B)  Sciatic 
C)  Phrenic 
D)  Cranial nerve XI 
A)  Intercostal nerve 
B)  Sciatic 
C)  Phrenic 
D)  Cranial nerve XI

Question 14

When the muscles of respiration relax,

Accepted Answer

A)  thoracic volume decreases and air moves out of the lungs. 
B)  thoracic volume increases and air moves out of the lung. 
C)  thoracic volume decreases and air moves into the lungs. 
D)  thoracic volume decreases and intrapulmonic pressure decreases. 
A)  thoracic volume decreases and air moves out of the lungs. 
B)  thoracic volume increases and air moves out of the lung. 
C)  thoracic volume decreases and air moves into the lungs. 
D)  thoracic volume decreases and intrapulmonic pressure decreases.

Question 15

Which of the following is most likely to cause pulmonary edema?

Accepted Answer

A)  Bronchitis 
B)  Coryza 
C)  Exercise-induced asthma 
D)  Left ventricular heart failure 
A)  Bronchitis 
B)  Coryza 
C)  Exercise-induced asthma 
D)  Left ventricular heart failure

Question 16

Dyspnea means

Accepted Answer

A)  "puffed up" alveoli. 
B)  pneumonia. 
C)  cyanosis. 
D)  difficulty breathing. 
A)  "puffed up" alveoli. 
B)  pneumonia. 
C)  cyanosis. 
D)  difficulty breathing.

Question 17

Firing of the intercostal and phrenic nerves

Accepted Answer

A)  activates the respiratory control center in the medulla oblongata. 
B)  causes relaxation of the muscles of respiration. 
C)  causes a skeletal muscle response that increases thoracic volume. 
D)  dilates the bronchioles. 
A)  activates the respiratory control center in the medulla oblongata. 
B)  causes relaxation of the muscles of respiration. 
C)  causes a skeletal muscle response that increases thoracic volume. 
D)  dilates the bronchioles.

Exam 22: Respiratory System

What is the effect of an overdose of an opioid (narcotic)?

"Clubbing" of the fingers is a response to

A tracheostomy is performed in order to

What is the effect of phrenic nerve stimulation?

Pleural membranes

As plasma PCO₂ increases,

What will happen under the following conditions: the pO₂ is 95 mm Hg (arterial blood)and 40 mm Hg (tissue)?

Which of the following is most likely to cause hypoxemia?

Which of the following is the major regulator of respiratory activity?

What causes a boy's voice to "break" or change at the onset of puberty?

A deficiency of surfactants in the neonate

Which of the following is most likely to stimulate coughing that may be accompanied by a life-threatening bradycardia?

Which nerve innervates the diaphragm?

When the muscles of respiration relax,

Which of the following is most likely to cause pulmonary edema?

Dyspnea means

Firing of the intercostal and phrenic nerves

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

Filters