CVS PHARMACOLOGY ACTUAL EXAMS 2026 (2 DIFFERENT VERSIONS) |
CARDIOVASCULAR SYSTEM PHARMACOLOGY EXAM | ALL QUESTIONS
AND CORRECT ANSWERS | UPDATED VERSIONS
Question 1
Stimulation of which receptors is the primary cause of vasoconstriction?
A) Beta-1 receptors
B) Beta-2 receptors
C) Alpha-1 receptors
D) Alpha-2 receptors
E) Muscarinic receptors
Correct Answer: C) Alpha-1 receptors
Rationale: Alpha-1 adrenergic receptors are located on vascular smooth muscle. When
stimulated by catecholamines like norepinephrine, they cause the muscle to contract, leading
to vasoconstriction and an increase in peripheral resistance.
Question 2
Stimulation of Beta-1 receptors in the heart results in which of the following effects?
A) Decreased heart rate and decreased force of contraction.
B) Increased heart rate and decreased force of contraction.
C) Decreased heart rate and increased force of contraction.
D) Increased heart rate and increased force of contraction.
E) Vasoconstriction of coronary arteries.
Correct Answer: D) Increased heart rate and increased force of contraction.
Rationale: Beta-1 receptors are the predominant beta-receptors in the heart. Their stimulation
leads to a positive chronotropic effect (increased heart rate) and a positive inotropic effect
(increased force of contraction).
Question 3
Stimulation of Beta-1 receptors in the kidneys leads to:
A) Decreased renin secretion
B) Increased renin secretion
,C) Increased sodium excretion
D) Decreased potassium excretion
E) Vasoconstriction of the efferent arteriole
Correct Answer: B) Increased renin secretion
Rationale: Beta-1 receptors are located on the juxtaglomerular cells of the kidney. When
stimulated by the sympathetic nervous system, these cells release renin, which activates the
renin-angiotensin-aldosterone system (RAAS).
Question 4
Propranolol, a first-generation beta-blocker, is non-selective and acts on which receptors?
A) Beta-1 only
B) Beta-2 only
C) Alpha-1 and Beta-1
D) Beta-1 and Beta-2
E) Alpha-1, Beta-1, and Beta-2
Correct Answer: D) Beta-1 and Beta-2
Rationale: Propranolol is a non-selective beta-blocker, meaning it blocks both Beta-1 receptors
(in the heart and kidneys) and Beta-2 receptors (in the lungs, blood vessels, etc.). This is why
it is contraindicated in asthmatics, as blocking Beta-2 receptors can cause
bronchoconstriction.
Question 5
Metoprolol is considered a cardioselective (second-generation) beta-blocker because it
primarily acts on which receptor?
A) Alpha-1
B) Alpha-2
C) Beta-1
D) Beta-2
E) Both Beta-1 and Beta-2 equally
,Correct Answer: C) Beta-1
Rationale: Metoprolol is selective for Beta-1 adrenergic receptors. This selectivity allows it to
reduce heart rate and contractility with less effect on the Beta-2 receptors in the airways,
making it a safer option for patients with asthma.
Question 6
Carvedilol, a third-generation beta-blocker, has a unique mechanism of action by blocking which
combination of receptors?
A) Beta-1 and Beta-2
B) Beta-1 and Alpha-1
C) Beta-1, Beta-2, and Alpha-1
D) Beta-2 and Alpha-1
E) Beta-1 only
Correct Answer: C) Beta-1, Beta-2, and Alpha-1
Rationale: Carvedilol is a non-selective beta-blocker (blocking B1 and B2) that also has an
alpha-1 blocking effect. This combination allows it to decrease heart rate and contractility (B1
block) while also causing vasodilation (a1 block), which reduces peripheral resistance without
causing reflex tachycardia.
Question 7
The pharmacological actions of beta-blockers include negative inotropy, negative chronotropy,
and:
A) increased renal renin output
B) reduced renal renin output
C) bronchodilation
D) peripheral vasodilation via Beta-2 agonism
E) increased atrioventricular (AV) conduction
Correct Answer: B) reduced renal renin output
Rationale: Beta-blockers block Beta-1 receptors on the juxtaglomerular cells of the kidney,
, which reduces the secretion of renin. This helps to lower blood pressure by decreasing the
activity of the renin-angiotensin-aldosterone system.
Question 8
Which of the following is a primary therapeutic use for beta-blockers?
A) Treatment of acute bronchospasm
B) Management of heart block
C) Cardiac rate control in atrial fibrillation
D) Increasing exercise tolerance in athletes
E) Immediate recovery from hypoglycemia in diabetics
Correct Answer: C) Cardiac rate control in atrial fibrillation
Rationale: By blocking Beta-1 receptors, beta-blockers slow down conduction through the AV
node and reduce the heart's response to rapid atrial impulses. This helps to control the
ventricular rate in conditions like atrial fibrillation.
Question 9
A significant adverse effect of non-selective beta-blockers like propranolol is:
A) Bronchodilation
B) Bronchospasm
C) Improved lipid profiles
D) Tachycardia
E) Enhanced recovery from hypoglycemia
Correct Answer: B) Bronchospasm
Rationale: Non-selective beta-blockers block Beta-2 receptors in the lungs, which can lead to
constriction of the airways (bronchospasm). This is particularly dangerous for patients with
asthma or COPD.
Question 10
Which property of Atenolol reduces its ability to cause CNS side effects like nightmares?
A) It is lipophilic.
B) It is hydrophilic.
CARDIOVASCULAR SYSTEM PHARMACOLOGY EXAM | ALL QUESTIONS
AND CORRECT ANSWERS | UPDATED VERSIONS
Question 1
Stimulation of which receptors is the primary cause of vasoconstriction?
A) Beta-1 receptors
B) Beta-2 receptors
C) Alpha-1 receptors
D) Alpha-2 receptors
E) Muscarinic receptors
Correct Answer: C) Alpha-1 receptors
Rationale: Alpha-1 adrenergic receptors are located on vascular smooth muscle. When
stimulated by catecholamines like norepinephrine, they cause the muscle to contract, leading
to vasoconstriction and an increase in peripheral resistance.
Question 2
Stimulation of Beta-1 receptors in the heart results in which of the following effects?
A) Decreased heart rate and decreased force of contraction.
B) Increased heart rate and decreased force of contraction.
C) Decreased heart rate and increased force of contraction.
D) Increased heart rate and increased force of contraction.
E) Vasoconstriction of coronary arteries.
Correct Answer: D) Increased heart rate and increased force of contraction.
Rationale: Beta-1 receptors are the predominant beta-receptors in the heart. Their stimulation
leads to a positive chronotropic effect (increased heart rate) and a positive inotropic effect
(increased force of contraction).
Question 3
Stimulation of Beta-1 receptors in the kidneys leads to:
A) Decreased renin secretion
B) Increased renin secretion
,C) Increased sodium excretion
D) Decreased potassium excretion
E) Vasoconstriction of the efferent arteriole
Correct Answer: B) Increased renin secretion
Rationale: Beta-1 receptors are located on the juxtaglomerular cells of the kidney. When
stimulated by the sympathetic nervous system, these cells release renin, which activates the
renin-angiotensin-aldosterone system (RAAS).
Question 4
Propranolol, a first-generation beta-blocker, is non-selective and acts on which receptors?
A) Beta-1 only
B) Beta-2 only
C) Alpha-1 and Beta-1
D) Beta-1 and Beta-2
E) Alpha-1, Beta-1, and Beta-2
Correct Answer: D) Beta-1 and Beta-2
Rationale: Propranolol is a non-selective beta-blocker, meaning it blocks both Beta-1 receptors
(in the heart and kidneys) and Beta-2 receptors (in the lungs, blood vessels, etc.). This is why
it is contraindicated in asthmatics, as blocking Beta-2 receptors can cause
bronchoconstriction.
Question 5
Metoprolol is considered a cardioselective (second-generation) beta-blocker because it
primarily acts on which receptor?
A) Alpha-1
B) Alpha-2
C) Beta-1
D) Beta-2
E) Both Beta-1 and Beta-2 equally
,Correct Answer: C) Beta-1
Rationale: Metoprolol is selective for Beta-1 adrenergic receptors. This selectivity allows it to
reduce heart rate and contractility with less effect on the Beta-2 receptors in the airways,
making it a safer option for patients with asthma.
Question 6
Carvedilol, a third-generation beta-blocker, has a unique mechanism of action by blocking which
combination of receptors?
A) Beta-1 and Beta-2
B) Beta-1 and Alpha-1
C) Beta-1, Beta-2, and Alpha-1
D) Beta-2 and Alpha-1
E) Beta-1 only
Correct Answer: C) Beta-1, Beta-2, and Alpha-1
Rationale: Carvedilol is a non-selective beta-blocker (blocking B1 and B2) that also has an
alpha-1 blocking effect. This combination allows it to decrease heart rate and contractility (B1
block) while also causing vasodilation (a1 block), which reduces peripheral resistance without
causing reflex tachycardia.
Question 7
The pharmacological actions of beta-blockers include negative inotropy, negative chronotropy,
and:
A) increased renal renin output
B) reduced renal renin output
C) bronchodilation
D) peripheral vasodilation via Beta-2 agonism
E) increased atrioventricular (AV) conduction
Correct Answer: B) reduced renal renin output
Rationale: Beta-blockers block Beta-1 receptors on the juxtaglomerular cells of the kidney,
, which reduces the secretion of renin. This helps to lower blood pressure by decreasing the
activity of the renin-angiotensin-aldosterone system.
Question 8
Which of the following is a primary therapeutic use for beta-blockers?
A) Treatment of acute bronchospasm
B) Management of heart block
C) Cardiac rate control in atrial fibrillation
D) Increasing exercise tolerance in athletes
E) Immediate recovery from hypoglycemia in diabetics
Correct Answer: C) Cardiac rate control in atrial fibrillation
Rationale: By blocking Beta-1 receptors, beta-blockers slow down conduction through the AV
node and reduce the heart's response to rapid atrial impulses. This helps to control the
ventricular rate in conditions like atrial fibrillation.
Question 9
A significant adverse effect of non-selective beta-blockers like propranolol is:
A) Bronchodilation
B) Bronchospasm
C) Improved lipid profiles
D) Tachycardia
E) Enhanced recovery from hypoglycemia
Correct Answer: B) Bronchospasm
Rationale: Non-selective beta-blockers block Beta-2 receptors in the lungs, which can lead to
constriction of the airways (bronchospasm). This is particularly dangerous for patients with
asthma or COPD.
Question 10
Which property of Atenolol reduces its ability to cause CNS side effects like nightmares?
A) It is lipophilic.
B) It is hydrophilic.
