1
NU 518 QUIZ 4 2026/2027 | ADVANCED
PHARMACOLOGY | 50 VERIFIED Q&A |
DETAILED RATIONALES | NGN-ALIGNED |
PASS GUARANTEED – A+ GRADED
SECTION 1: AUTONOMIC NERVOUS SYSTEM PHARMACOLOGY - Questions 1-10
Q1: Alpha-2 Agonist Mechanism
The student is reviewing adrenergic pharmacology. What is the mechanism of action of clonidine?
A. Central alpha-2 adrenergic agonist that reduces sympathetic outflow
B. Peripheral alpha-1 adrenergic antagonist
C. Beta-1 adrenergic agonist
D. Muscarinic receptor agonist
Correct Answer: A
Rationale: Clonidine is a central alpha-2 adrenergic agonist that stimulates alpha-2 receptors in the
brainstem, reducing sympathetic outflow to the periphery. This decreases heart rate and blood
pressure. It is used for hypertension, ADHD, opioid withdrawal, and menopausal hot flashes. [100%
CORRECT]
Q2: Alpha-1 Blocker Selectivity
The student is reviewing alpha-blockers. Which alpha-1 blocker is selective for the prostate and used
for benign prostatic hyperplasia?
A. Prazosin
B. Tamsulosin
C. Doxazosin
D. Terazosin
Correct Answer: B
Rationale: Tamsulosin is a selective alpha-1A blocker that primarily targets alpha-1A receptors in the
prostate and bladder neck, relaxing smooth muscle and improving urine flow. It has fewer
cardiovascular effects (orthostatic hypotension) than nonselective alpha-1 blockers like prazosin,
doxazosin, and terazosin. [100% CORRECT]
Q3: Beta-3 Agonist Use
The student is reviewing adrenergic agonists. What is the primary use of mirabegron?
,2
A. Treatment of overactive bladder
B. Treatment of asthma
C. Treatment of hypertension
D. Treatment of heart failure
Correct Answer: A
Rationale: Mirabegron is a beta-3 adrenergic agonist that relaxes the detrusor muscle of the
bladder, increasing bladder capacity and reducing urgency. It is used for overactive bladder. Beta-2
agonists are used for asthma. [100% CORRECT]
Q4: Muscarinic Antagonist Adverse Effect
The student is reviewing anticholinergic medications. Which adverse effect is associated with
oxybutynin?
A. Dry mouth
B. Diarrhea
C. Bradycardia
D. Hypotension
Correct Answer: A
Rationale: Oxybutynin is a muscarinic antagonist used for overactive bladder. It commonly causes
dry mouth, constipation, blurred vision, and urinary retention. It does not cause diarrhea,
bradycardia, or hypotension. [100% CORRECT]
Q5: Cholinesterase Inhibitor Use
The student is reviewing cholinesterase inhibitors. Which medication is used to reverse non-
depolarizing neuromuscular blockade?
A. Neostigmine
B. Succinylcholine
C. Atropine
D. Epinephrine
Correct Answer: A
Rationale: Neostigmine is a cholinesterase inhibitor that increases acetylcholine at the
neuromuscular junction, reversing non-depolarizing neuromuscular blockade. It is often given with
an anticholinergic (e.g., glycopyrrolate) to prevent bradycardia. Succinylcholine is a depolarizing
blocker. [100% CORRECT]
Q6: Neuromuscular Blocker Depolarizing
The student is reviewing neuromuscular blockers. What is the mechanism of action of
succinylcholine?
, 3
A. Depolarizing neuromuscular blocker
B. Non-depolarizing neuromuscular blocker
C. Central nervous system depressant
D. Peripheral nerve stimulant
Correct Answer: A
Rationale: Succinylcholine is a depolarizing neuromuscular blocker that binds to nicotinic receptors
and causes persistent depolarization, resulting in muscle paralysis. It is used for rapid sequence
intubation. [100% CORRECT]
Q7: Dopamine Receptor Agonist Use
The student is reviewing adrenergic drugs. Which medication is a dopamine receptor agonist used
for shock?
A. Dopamine
B. Dobutamine
C. Norepinephrine
D. Phenylephrine
Correct Answer: A
Rationale: Dopamine stimulates dopamine receptors (renal and mesenteric vasodilation), beta-1
receptors (cardiac stimulation), and alpha-1 receptors (vasoconstriction) depending on the dose.
Dobutamine is primarily a beta-1 agonist. Norepinephrine and phenylephrine are primarily alpha-
agonists. [100% CORRECT]
Q8: Anticholinergic Toxicity
The student is reviewing anticholinergic drugs. Which set of symptoms indicates anticholinergic
toxicity?
A. Hot, dry skin; mydriasis; urinary retention; confusion
B. Cool, moist skin; miosis; diarrhea; bradycardia
C. Flushing; diaphoresis; lacrimation; urination
D. Bronchorrhea; bradycardia; miosis; diarrhea
Correct Answer: A
Rationale: Anticholinergic toxicity is characterized by "hot as a hare, blind as a bat, dry as a bone,
red as a beet, mad as a hatter" — hyperthermia, mydriasis, dry skin, flushing, and delirium. Option B
describes cholinergic effects. [100% CORRECT]
Q9: Beta-Blocker Adverse Effect
The student is reviewing beta-blockers. Which adverse effect is associated with propranolol?
A. Bronchoconstriction
B. Hypertension
NU 518 QUIZ 4 2026/2027 | ADVANCED
PHARMACOLOGY | 50 VERIFIED Q&A |
DETAILED RATIONALES | NGN-ALIGNED |
PASS GUARANTEED – A+ GRADED
SECTION 1: AUTONOMIC NERVOUS SYSTEM PHARMACOLOGY - Questions 1-10
Q1: Alpha-2 Agonist Mechanism
The student is reviewing adrenergic pharmacology. What is the mechanism of action of clonidine?
A. Central alpha-2 adrenergic agonist that reduces sympathetic outflow
B. Peripheral alpha-1 adrenergic antagonist
C. Beta-1 adrenergic agonist
D. Muscarinic receptor agonist
Correct Answer: A
Rationale: Clonidine is a central alpha-2 adrenergic agonist that stimulates alpha-2 receptors in the
brainstem, reducing sympathetic outflow to the periphery. This decreases heart rate and blood
pressure. It is used for hypertension, ADHD, opioid withdrawal, and menopausal hot flashes. [100%
CORRECT]
Q2: Alpha-1 Blocker Selectivity
The student is reviewing alpha-blockers. Which alpha-1 blocker is selective for the prostate and used
for benign prostatic hyperplasia?
A. Prazosin
B. Tamsulosin
C. Doxazosin
D. Terazosin
Correct Answer: B
Rationale: Tamsulosin is a selective alpha-1A blocker that primarily targets alpha-1A receptors in the
prostate and bladder neck, relaxing smooth muscle and improving urine flow. It has fewer
cardiovascular effects (orthostatic hypotension) than nonselective alpha-1 blockers like prazosin,
doxazosin, and terazosin. [100% CORRECT]
Q3: Beta-3 Agonist Use
The student is reviewing adrenergic agonists. What is the primary use of mirabegron?
,2
A. Treatment of overactive bladder
B. Treatment of asthma
C. Treatment of hypertension
D. Treatment of heart failure
Correct Answer: A
Rationale: Mirabegron is a beta-3 adrenergic agonist that relaxes the detrusor muscle of the
bladder, increasing bladder capacity and reducing urgency. It is used for overactive bladder. Beta-2
agonists are used for asthma. [100% CORRECT]
Q4: Muscarinic Antagonist Adverse Effect
The student is reviewing anticholinergic medications. Which adverse effect is associated with
oxybutynin?
A. Dry mouth
B. Diarrhea
C. Bradycardia
D. Hypotension
Correct Answer: A
Rationale: Oxybutynin is a muscarinic antagonist used for overactive bladder. It commonly causes
dry mouth, constipation, blurred vision, and urinary retention. It does not cause diarrhea,
bradycardia, or hypotension. [100% CORRECT]
Q5: Cholinesterase Inhibitor Use
The student is reviewing cholinesterase inhibitors. Which medication is used to reverse non-
depolarizing neuromuscular blockade?
A. Neostigmine
B. Succinylcholine
C. Atropine
D. Epinephrine
Correct Answer: A
Rationale: Neostigmine is a cholinesterase inhibitor that increases acetylcholine at the
neuromuscular junction, reversing non-depolarizing neuromuscular blockade. It is often given with
an anticholinergic (e.g., glycopyrrolate) to prevent bradycardia. Succinylcholine is a depolarizing
blocker. [100% CORRECT]
Q6: Neuromuscular Blocker Depolarizing
The student is reviewing neuromuscular blockers. What is the mechanism of action of
succinylcholine?
, 3
A. Depolarizing neuromuscular blocker
B. Non-depolarizing neuromuscular blocker
C. Central nervous system depressant
D. Peripheral nerve stimulant
Correct Answer: A
Rationale: Succinylcholine is a depolarizing neuromuscular blocker that binds to nicotinic receptors
and causes persistent depolarization, resulting in muscle paralysis. It is used for rapid sequence
intubation. [100% CORRECT]
Q7: Dopamine Receptor Agonist Use
The student is reviewing adrenergic drugs. Which medication is a dopamine receptor agonist used
for shock?
A. Dopamine
B. Dobutamine
C. Norepinephrine
D. Phenylephrine
Correct Answer: A
Rationale: Dopamine stimulates dopamine receptors (renal and mesenteric vasodilation), beta-1
receptors (cardiac stimulation), and alpha-1 receptors (vasoconstriction) depending on the dose.
Dobutamine is primarily a beta-1 agonist. Norepinephrine and phenylephrine are primarily alpha-
agonists. [100% CORRECT]
Q8: Anticholinergic Toxicity
The student is reviewing anticholinergic drugs. Which set of symptoms indicates anticholinergic
toxicity?
A. Hot, dry skin; mydriasis; urinary retention; confusion
B. Cool, moist skin; miosis; diarrhea; bradycardia
C. Flushing; diaphoresis; lacrimation; urination
D. Bronchorrhea; bradycardia; miosis; diarrhea
Correct Answer: A
Rationale: Anticholinergic toxicity is characterized by "hot as a hare, blind as a bat, dry as a bone,
red as a beet, mad as a hatter" — hyperthermia, mydriasis, dry skin, flushing, and delirium. Option B
describes cholinergic effects. [100% CORRECT]
Q9: Beta-Blocker Adverse Effect
The student is reviewing beta-blockers. Which adverse effect is associated with propranolol?
A. Bronchoconstriction
B. Hypertension
