NR 546 MIDTERM EXAM STUDY GUIDE 2026/2027 |
Chamberlain University | Advanced Psychopharmacology for
PMHNP | 100% Correct Verified Q&A with Detailed Rationales
| Pass Guaranteed - A+ Graded
Module 1: Neurobiology and Neurotransmitter Systems (25 Questions)
Q1: Which neurotransmitter is synthesized from the amino acid tryptophan via the
intermediate 5-hydroxytryptophan (5-HTP)?
A. Dopamine
B. Norepinephrine
C. Serotonin
D. Gamma-aminobutyric acid (GABA)
Correct Answer: C
Rationale: Serotonin (5-HT) is synthesized from dietary tryptophan through
hydroxylation to 5-HTP, then decarboxylation to serotonin. [CORRECT] Dopamine and
norepinephrine (options A, B) are catecholamines synthesized from tyrosine. GABA
(option D) is synthesized from glutamate via glutamic acid decarboxylase.
,Q2: A patient with Parkinson's disease has degeneration of dopaminergic neurons in
which specific brain region?
A. Ventral tegmental area (VTA)
B. Substantia nigra pars compacta
C. Nucleus accumbens
D. Raphe nuclei
Correct Answer: B
Rationale: The substantia nigra pars compacta contains dopaminergic neurons
projecting to the striatum via the nigrostriatal pathway; degeneration causes
Parkinsonian motor symptoms. [CORRECT] The VTA (option A) is involved in reward
(mesolimbic pathway). Nucleus accumbens (option C) is a projection site, not the cell
body location. Raphe nuclei (option D) contain serotonergic neurons.
Q3: Which statement accurately describes the mechanism of neurotransmitter
reuptake?
A. Reuptake occurs exclusively through passive diffusion across the synaptic
membrane
,B. Reuptake transporters are located only on presynaptic neurons
C. Reuptake terminates synaptic signaling and recycles neurotransmitters for vesicular
repackaging
D. Reuptake inhibitors increase neurotransmitter degradation in the synaptic cleft
Correct Answer: C
Rationale: Reuptake transporters (e.g., SERT, NET, DAT) terminate signaling by clearing
neurotransmitters from the synapse, allowing recycling into presynaptic vesicles.
[CORRECT] Reuptake is active transport (option A incorrect). Transporters exist on glia
and postsynaptic cells too (option B incorrect). Inhibitors increase synaptic availability,
not degradation (option D incorrect).
Q4: The mesolimbic dopamine pathway originates in the VTA and projects primarily to
which structure, making it central to reward and addiction?
A. Prefrontal cortex
B. Hippocampus
C. Nucleus accumbens
D. Cerebellum
, Correct Answer: C
Rationale: The mesolimbic pathway (VTA to nucleus accumbens) is the primary reward
circuit; hyperactivity correlates with positive symptoms of schizophrenia and addiction.
[CORRECT] Prefrontal cortex (option A) receives mesocortical projections (cognition).
Hippocampus (option B) and cerebellum (option D) are not primary mesolimbic targets.
Q5: Which receptor subtype is primarily responsible for the sedative and anxiolytic
effects of benzodiazepines?
A. GABA-A receptor containing α1 subunits
B. GABA-A receptor containing α2 subunits
C. GABA-B receptors
D. GABA-A receptor containing α5 subunits
Correct Answer: B
Rationale: GABA-A receptors with α2 subunits mediate anxiolytic effects; α1 subunits
(option A) mediate sedation and amnesia. [CORRECT] This explains why some
non-benzodiazepine hypnotics selective for α1 (e.g., zolpidem) have less anxiolytic
effect. GABA-B receptors (option C) are metabotropic and not benzodiazepine targets.
α5 subunits (option D) are involved in hippocampal learning.
Chamberlain University | Advanced Psychopharmacology for
PMHNP | 100% Correct Verified Q&A with Detailed Rationales
| Pass Guaranteed - A+ Graded
Module 1: Neurobiology and Neurotransmitter Systems (25 Questions)
Q1: Which neurotransmitter is synthesized from the amino acid tryptophan via the
intermediate 5-hydroxytryptophan (5-HTP)?
A. Dopamine
B. Norepinephrine
C. Serotonin
D. Gamma-aminobutyric acid (GABA)
Correct Answer: C
Rationale: Serotonin (5-HT) is synthesized from dietary tryptophan through
hydroxylation to 5-HTP, then decarboxylation to serotonin. [CORRECT] Dopamine and
norepinephrine (options A, B) are catecholamines synthesized from tyrosine. GABA
(option D) is synthesized from glutamate via glutamic acid decarboxylase.
,Q2: A patient with Parkinson's disease has degeneration of dopaminergic neurons in
which specific brain region?
A. Ventral tegmental area (VTA)
B. Substantia nigra pars compacta
C. Nucleus accumbens
D. Raphe nuclei
Correct Answer: B
Rationale: The substantia nigra pars compacta contains dopaminergic neurons
projecting to the striatum via the nigrostriatal pathway; degeneration causes
Parkinsonian motor symptoms. [CORRECT] The VTA (option A) is involved in reward
(mesolimbic pathway). Nucleus accumbens (option C) is a projection site, not the cell
body location. Raphe nuclei (option D) contain serotonergic neurons.
Q3: Which statement accurately describes the mechanism of neurotransmitter
reuptake?
A. Reuptake occurs exclusively through passive diffusion across the synaptic
membrane
,B. Reuptake transporters are located only on presynaptic neurons
C. Reuptake terminates synaptic signaling and recycles neurotransmitters for vesicular
repackaging
D. Reuptake inhibitors increase neurotransmitter degradation in the synaptic cleft
Correct Answer: C
Rationale: Reuptake transporters (e.g., SERT, NET, DAT) terminate signaling by clearing
neurotransmitters from the synapse, allowing recycling into presynaptic vesicles.
[CORRECT] Reuptake is active transport (option A incorrect). Transporters exist on glia
and postsynaptic cells too (option B incorrect). Inhibitors increase synaptic availability,
not degradation (option D incorrect).
Q4: The mesolimbic dopamine pathway originates in the VTA and projects primarily to
which structure, making it central to reward and addiction?
A. Prefrontal cortex
B. Hippocampus
C. Nucleus accumbens
D. Cerebellum
, Correct Answer: C
Rationale: The mesolimbic pathway (VTA to nucleus accumbens) is the primary reward
circuit; hyperactivity correlates with positive symptoms of schizophrenia and addiction.
[CORRECT] Prefrontal cortex (option A) receives mesocortical projections (cognition).
Hippocampus (option B) and cerebellum (option D) are not primary mesolimbic targets.
Q5: Which receptor subtype is primarily responsible for the sedative and anxiolytic
effects of benzodiazepines?
A. GABA-A receptor containing α1 subunits
B. GABA-A receptor containing α2 subunits
C. GABA-B receptors
D. GABA-A receptor containing α5 subunits
Correct Answer: B
Rationale: GABA-A receptors with α2 subunits mediate anxiolytic effects; α1 subunits
(option A) mediate sedation and amnesia. [CORRECT] This explains why some
non-benzodiazepine hypnotics selective for α1 (e.g., zolpidem) have less anxiolytic
effect. GABA-B receptors (option C) are metabotropic and not benzodiazepine targets.
α5 subunits (option D) are involved in hippocampal learning.
