PHARMACOLOGY NURS 251 MODULE 9 EXAM COMPLETE 200
QUESTIONS AND CORRECT DETAILED ANSWERS (VERIFIED
ANSWERS) ALREADY GRADED A+.
Question 1
Which two gases are primarily exchanged in the alveoli of the lungs?
A) Nitrogen and Hydrogen
B) Carbon Dioxide and Oxygen
C) Methane and Carbon Monoxide
D) Helium and Oxygen
E) Nitrous Oxide and Carbon Dioxide
Correct Answer: B) Carbon Dioxide and Oxygen
Rationale: The alveoli are the microscopic air sacs in the lungs where the vital process of gas
exchange occurs. Oxygen from inhaled air diffuses across the alveolar-capillary membrane
into the bloodstream, while carbon dioxide from the blood diffuses into the alveoli to be
exhaled.
Question 2
Select the correct statement regarding respiratory diseases:
A) COPD consists of both emphysema and asthma.
B) Asthma is characterized by recurrent, irreversible shortness of breath.
C) Emphysema is a disease process involving inflammation of the alveoli.
D) Chronic bronchitis is primarily characterized by alveolar wall destruction.
E) Beta-adrenergic agonists work primarily via their anti-inflammatory effects.
Correct Answer: C) Emphysema is a disease process involving inflammation of the alveoli.
Rationale: Emphysema is characterized by the destruction of the alveolar walls, leading to
enlargement of air spaces, loss of elasticity, and impaired gas exchange. The provided
correct answer states it involves inflammation of the alveoli, which is a component of the
pathophysiology leading to destruction. (Note: The user's provided answer for this question
stated "Emphysema is a disease process involving inflammation of the alveoli" as correct.
While emphysema is primarily defined by alveolar destruction and airspace enlargement,
inflammation does contribute to this process. For the purpose of this exam prep, I'm
adhering to the provided correct answer. However, for deeper understanding, destruction
of alveolar walls and permanent enlargement of airspaces are key features.)
Question 3
Among the various chemical mediators responsible for the symptoms and complications of
asthma and COPD, which one has a known drug therapy that has been shown to improve
symptoms?
A) Prostaglandins
B) Histamine
C) Leukotrienes
,[Type here]
D) Bradykinins
E) Serotonin
Correct Answer: C) Leukotrienes
Rationale: Leukotrienes are potent inflammatory mediators that contribute to
bronchoconstriction, airway edema, and mucus production in asthma and COPD. Drugs
that specifically target leukotrienes (leukotriene modifiers like montelukast, zafirlukast,
and zileuton) are used in the management of these conditions to improve symptoms.
Question 4
True or False: Intrinsic asthma is caused by allergies.
A) True
B) False
Correct Answer: B) False
Rationale: This statement is false. Intrinsic asthma is typically non-allergic, meaning it is
not triggered by specific allergens (e.g., dust mites, pollen). Extrinsic asthma, on the other
hand, is caused by allergies (IgE-mediated hypersensitivity reaction).
Question 5
Match asthma to its pathophysiology:
A) Air spaces increase because of alveolar wall destruction.
B) Bronchiole narrowing causing bronchospasm and inflammation.
C) Irritant causes increase in mucous secretions.
D) Permanent and progressive loss of lung elasticity.
E) Primarily affects the heart's pumping ability.
Correct Answer: B) Bronchiole narrowing causing bronchospasm and inflammation.
Rationale: The pathophysiology of asthma is primarily characterized by chronic airway
inflammation leading to hyperresponsiveness, bronchoconstriction (bronchiole
narrowing/bronchospasm), airway edema, and increased mucus production, which together
result in reversible airflow obstruction.
Question 6
Match emphysema to its pathophysiology:
A) Bronchiole narrowing causing bronchospasm and inflammation.
B) Air spaces increase because of alveolar wall destruction.
C) Irritant causes increase in mucous secretions.
D) Reversible airflow obstruction due to smooth muscle constriction.
E) Decreased lung compliance due to interstitial fibrosis.
Correct Answer: B) Air spaces increase because of alveolar wall destruction.
Rationale: Emphysema is a component of COPD characterized by the permanent
,[Type here]
enlargement of air spaces distal to the terminal bronchioles, accompanied by destruction of
the alveolar walls. This loss of alveolar structure and elasticity impairs gas exchange.
Question 7
Match chronic bronchitis to its pathophysiology:
A) Air spaces increase because of alveolar wall destruction.
B) Bronchiole narrowing causing bronchospasm and inflammation.
C) Irritant causes increase in mucous secretions.
D) Primarily affects the trachea and large bronchi.
E) Loss of elastic recoil in the small airways.
Correct Answer: C) Irritant causes increase in mucous secretions.
Rationale: Chronic bronchitis is defined clinically as a chronic productive cough for at least
3 months in 2 successive years. Its pathophysiology involves hypertrophy of mucus-
secreting glands in the large airways in response to chronic irritation (e.g., tobacco smoke),
leading to excessive mucus production and airway obstruction.
Question 8
Tobacco smoke is an irritant closely linked to the cause of what disease state?
A) Asthma
B) Cystic Fibrosis
C) Emphysema
D) Chronic Bronchitis
E) Both C and D.
Correct Answer: E) Both C and D.
Rationale: Tobacco smoke is the overwhelming primary cause and irritant closely linked to
both emphysema and chronic bronchitis, which together constitute the majority of cases of
Chronic Obstructive Pulmonary Disease (COPD).
Question 9
True or False: Beta-adrenergic agonists work primarily via their anti-inflammatory effects.
A) True
B) False
Correct Answer: B) False
Rationale: This statement is false. Beta-adrenergic agonists (beta-agonists) work primarily
as bronchodilators by stimulating beta-2 adrenergic receptors in the bronchial smooth
muscle, leading to relaxation and widening of the airways. Their anti-inflammatory effects
are minimal or indirect; corticosteroids are the primary anti-inflammatory drugs.
Question 10
Which of the following medications is primarily used to prevent symptoms of asthma?
A) Albuterol
, [Type here]
B) Ipratropium
C) Fluticasone
D) Tiotropium
E) Levalbuterol
Correct Answer: C) Fluticasone
Rationale: Fluticasone is an inhaled corticosteroid (ICS), which is the cornerstone of
preventative (long-term controller) therapy for persistent asthma. ICS work by reducing
airway inflammation. Albuterol and levalbuterol are rescue bronchodilators. Ipratropium
and tiotropium are anticholinergic bronchodilators, used more for COPD or as add-ons in
severe asthma.
Question 11
List the drug classes with anti-inflammatory effects that are used in the treatment of COPD and
asthma. (Select all that apply if multiple classes are applicable)
A) Beta-adrenergic agonists
B) Anticholinergics
C) Inhaled corticosteroids
D) Leukotriene inhibitors
E) Xanthines
Correct Answer: C) Inhaled corticosteroids, D) Leukotriene inhibitors
Rationale: Inhaled corticosteroids (e.g., fluticasone, budesonide) are the most effective anti-
inflammatory drugs for asthma and are also used in moderate to severe COPD.
Leukotriene inhibitors (e.g., montelukast, zafirlukast, zileuton) also have anti-
inflammatory effects and are used as controller medications in asthma. Beta-agonists and
anticholinergics are bronchodilators, and xanthines have mixed effects but are not
primarily anti-inflammatory.
Question 12
Which of the following statements is true regarding beta-adrenergic agonists?
A) Beta-adrenergic agonists used to treat asthma act on beta-1 receptors.
B) Beta-adrenergic agonists can be used as a rescue medication and maintenance therapy.
C) Possible side effects include skeletal muscle tremor and oral infection.
D) Salmeterol is an example of a short-acting beta-agonist.
E) They work by inhibiting the enzyme phosphodiesterase.
Correct Answer: B) Beta-adrenergic agonists can be used as a rescue medication and
maintenance therapy.
Rationale: Beta-adrenergic agonists come in short-acting forms (SABAs like albuterol) used
for rescue, and long-acting forms (LABAs like salmeterol, formoterol) used for
maintenance therapy (always in combination with an ICS for asthma). They act on beta-2
QUESTIONS AND CORRECT DETAILED ANSWERS (VERIFIED
ANSWERS) ALREADY GRADED A+.
Question 1
Which two gases are primarily exchanged in the alveoli of the lungs?
A) Nitrogen and Hydrogen
B) Carbon Dioxide and Oxygen
C) Methane and Carbon Monoxide
D) Helium and Oxygen
E) Nitrous Oxide and Carbon Dioxide
Correct Answer: B) Carbon Dioxide and Oxygen
Rationale: The alveoli are the microscopic air sacs in the lungs where the vital process of gas
exchange occurs. Oxygen from inhaled air diffuses across the alveolar-capillary membrane
into the bloodstream, while carbon dioxide from the blood diffuses into the alveoli to be
exhaled.
Question 2
Select the correct statement regarding respiratory diseases:
A) COPD consists of both emphysema and asthma.
B) Asthma is characterized by recurrent, irreversible shortness of breath.
C) Emphysema is a disease process involving inflammation of the alveoli.
D) Chronic bronchitis is primarily characterized by alveolar wall destruction.
E) Beta-adrenergic agonists work primarily via their anti-inflammatory effects.
Correct Answer: C) Emphysema is a disease process involving inflammation of the alveoli.
Rationale: Emphysema is characterized by the destruction of the alveolar walls, leading to
enlargement of air spaces, loss of elasticity, and impaired gas exchange. The provided
correct answer states it involves inflammation of the alveoli, which is a component of the
pathophysiology leading to destruction. (Note: The user's provided answer for this question
stated "Emphysema is a disease process involving inflammation of the alveoli" as correct.
While emphysema is primarily defined by alveolar destruction and airspace enlargement,
inflammation does contribute to this process. For the purpose of this exam prep, I'm
adhering to the provided correct answer. However, for deeper understanding, destruction
of alveolar walls and permanent enlargement of airspaces are key features.)
Question 3
Among the various chemical mediators responsible for the symptoms and complications of
asthma and COPD, which one has a known drug therapy that has been shown to improve
symptoms?
A) Prostaglandins
B) Histamine
C) Leukotrienes
,[Type here]
D) Bradykinins
E) Serotonin
Correct Answer: C) Leukotrienes
Rationale: Leukotrienes are potent inflammatory mediators that contribute to
bronchoconstriction, airway edema, and mucus production in asthma and COPD. Drugs
that specifically target leukotrienes (leukotriene modifiers like montelukast, zafirlukast,
and zileuton) are used in the management of these conditions to improve symptoms.
Question 4
True or False: Intrinsic asthma is caused by allergies.
A) True
B) False
Correct Answer: B) False
Rationale: This statement is false. Intrinsic asthma is typically non-allergic, meaning it is
not triggered by specific allergens (e.g., dust mites, pollen). Extrinsic asthma, on the other
hand, is caused by allergies (IgE-mediated hypersensitivity reaction).
Question 5
Match asthma to its pathophysiology:
A) Air spaces increase because of alveolar wall destruction.
B) Bronchiole narrowing causing bronchospasm and inflammation.
C) Irritant causes increase in mucous secretions.
D) Permanent and progressive loss of lung elasticity.
E) Primarily affects the heart's pumping ability.
Correct Answer: B) Bronchiole narrowing causing bronchospasm and inflammation.
Rationale: The pathophysiology of asthma is primarily characterized by chronic airway
inflammation leading to hyperresponsiveness, bronchoconstriction (bronchiole
narrowing/bronchospasm), airway edema, and increased mucus production, which together
result in reversible airflow obstruction.
Question 6
Match emphysema to its pathophysiology:
A) Bronchiole narrowing causing bronchospasm and inflammation.
B) Air spaces increase because of alveolar wall destruction.
C) Irritant causes increase in mucous secretions.
D) Reversible airflow obstruction due to smooth muscle constriction.
E) Decreased lung compliance due to interstitial fibrosis.
Correct Answer: B) Air spaces increase because of alveolar wall destruction.
Rationale: Emphysema is a component of COPD characterized by the permanent
,[Type here]
enlargement of air spaces distal to the terminal bronchioles, accompanied by destruction of
the alveolar walls. This loss of alveolar structure and elasticity impairs gas exchange.
Question 7
Match chronic bronchitis to its pathophysiology:
A) Air spaces increase because of alveolar wall destruction.
B) Bronchiole narrowing causing bronchospasm and inflammation.
C) Irritant causes increase in mucous secretions.
D) Primarily affects the trachea and large bronchi.
E) Loss of elastic recoil in the small airways.
Correct Answer: C) Irritant causes increase in mucous secretions.
Rationale: Chronic bronchitis is defined clinically as a chronic productive cough for at least
3 months in 2 successive years. Its pathophysiology involves hypertrophy of mucus-
secreting glands in the large airways in response to chronic irritation (e.g., tobacco smoke),
leading to excessive mucus production and airway obstruction.
Question 8
Tobacco smoke is an irritant closely linked to the cause of what disease state?
A) Asthma
B) Cystic Fibrosis
C) Emphysema
D) Chronic Bronchitis
E) Both C and D.
Correct Answer: E) Both C and D.
Rationale: Tobacco smoke is the overwhelming primary cause and irritant closely linked to
both emphysema and chronic bronchitis, which together constitute the majority of cases of
Chronic Obstructive Pulmonary Disease (COPD).
Question 9
True or False: Beta-adrenergic agonists work primarily via their anti-inflammatory effects.
A) True
B) False
Correct Answer: B) False
Rationale: This statement is false. Beta-adrenergic agonists (beta-agonists) work primarily
as bronchodilators by stimulating beta-2 adrenergic receptors in the bronchial smooth
muscle, leading to relaxation and widening of the airways. Their anti-inflammatory effects
are minimal or indirect; corticosteroids are the primary anti-inflammatory drugs.
Question 10
Which of the following medications is primarily used to prevent symptoms of asthma?
A) Albuterol
, [Type here]
B) Ipratropium
C) Fluticasone
D) Tiotropium
E) Levalbuterol
Correct Answer: C) Fluticasone
Rationale: Fluticasone is an inhaled corticosteroid (ICS), which is the cornerstone of
preventative (long-term controller) therapy for persistent asthma. ICS work by reducing
airway inflammation. Albuterol and levalbuterol are rescue bronchodilators. Ipratropium
and tiotropium are anticholinergic bronchodilators, used more for COPD or as add-ons in
severe asthma.
Question 11
List the drug classes with anti-inflammatory effects that are used in the treatment of COPD and
asthma. (Select all that apply if multiple classes are applicable)
A) Beta-adrenergic agonists
B) Anticholinergics
C) Inhaled corticosteroids
D) Leukotriene inhibitors
E) Xanthines
Correct Answer: C) Inhaled corticosteroids, D) Leukotriene inhibitors
Rationale: Inhaled corticosteroids (e.g., fluticasone, budesonide) are the most effective anti-
inflammatory drugs for asthma and are also used in moderate to severe COPD.
Leukotriene inhibitors (e.g., montelukast, zafirlukast, zileuton) also have anti-
inflammatory effects and are used as controller medications in asthma. Beta-agonists and
anticholinergics are bronchodilators, and xanthines have mixed effects but are not
primarily anti-inflammatory.
Question 12
Which of the following statements is true regarding beta-adrenergic agonists?
A) Beta-adrenergic agonists used to treat asthma act on beta-1 receptors.
B) Beta-adrenergic agonists can be used as a rescue medication and maintenance therapy.
C) Possible side effects include skeletal muscle tremor and oral infection.
D) Salmeterol is an example of a short-acting beta-agonist.
E) They work by inhibiting the enzyme phosphodiesterase.
Correct Answer: B) Beta-adrenergic agonists can be used as a rescue medication and
maintenance therapy.
Rationale: Beta-adrenergic agonists come in short-acting forms (SABAs like albuterol) used
for rescue, and long-acting forms (LABAs like salmeterol, formoterol) used for
maintenance therapy (always in combination with an ICS for asthma). They act on beta-2
