NR 546 PSYCHOPHARMACOLOGY
FINAL EXAM COMPREHENSIVE GUIDE
QUESTIONS AND ANSWERS
1. Which neurotransmitter is primarily implicated in the ‘reward’ pathway of the brain, and
which brain region is most associated with this circuit?
A. Serotonin; Raphe Nucleus
B. Dopamine; Nucleus Accumbens
C. GABA; Amygdala
D. Norepinephrine; Locus Coeruleus
Answer: B
Conceptual Explanation: Dopamine is the primary neurotransmitter involved in reward
and pleasure, particularly within the mesolimbic pathway originating in the ventral
tegmental area and projecting to the nucleus accumbens.
2. A patient taking Clozapine presents with a fever, sore throat, and malaise. What is the
most critical laboratory parameter to check immediately?
A. Liver function tests (LFTs)
B. Serum glucose levels
,C. Creatinine kinase levels
D. Absolute Neutrophil Count (ANC)
Answer: D
Conceptual Explanation: Clozapine carries a black box warning for agranulocytosis. A
fever and sore throat are clinical signs of infection, requiring an immediate check of the
ANC to rule out severe neutropenia.
3. Which mechanism of action distinguishes Second-Generation Antipsychotics (SGAs) from
First-Generation Antipsychotics (FGAs)?
A. D2 receptor antagonism only
B. Alpha-1 adrenergic agonism
C. 5HT2A receptor antagonism coupled with D2 antagonism
D. Muscarinic M1 receptor blockade
Answer: C
Conceptual Explanation: SGAs are defined by their ability to block both D2 and 5HT2A
receptors, which generally leads to a lower risk of extrapyramidal symptoms compared to
FGAs, which primarily focus on D2 blockade.
4. Lithium toxicity is exacerbated by the concurrent use of which class of medications due to
reduced renal clearance?
A. SSRIs
, B. NSAIDs
C. Calcium channel blockers
D. Atypical antipsychotics
Answer: B
Conceptual Explanation: NSAIDs can reduce renal blood flow and lithium clearance,
leading to increased lithium levels and potential toxicity.
5. A patient is diagnosed with depression and chronic neuropathic pain. Which
antidepressant would be most appropriate due to its dual mechanism?
A. Fluoxetine
B. Duloxetine
C. Escitalopram
D. Sertraline
Answer: B
Conceptual Explanation: Duloxetine is an SNRI (Serotonin-Norepinephrine Reuptake
Inhibitor) indicated for both major depressive disorder and chronic pain conditions like
diabetic neuropathy and fibromyalgia.
6. What is the primary mechanism of action for the medication Atomoxetine used in ADHD?
A. GABA receptor modulation
B. Dopamine reuptake inhibition
FINAL EXAM COMPREHENSIVE GUIDE
QUESTIONS AND ANSWERS
1. Which neurotransmitter is primarily implicated in the ‘reward’ pathway of the brain, and
which brain region is most associated with this circuit?
A. Serotonin; Raphe Nucleus
B. Dopamine; Nucleus Accumbens
C. GABA; Amygdala
D. Norepinephrine; Locus Coeruleus
Answer: B
Conceptual Explanation: Dopamine is the primary neurotransmitter involved in reward
and pleasure, particularly within the mesolimbic pathway originating in the ventral
tegmental area and projecting to the nucleus accumbens.
2. A patient taking Clozapine presents with a fever, sore throat, and malaise. What is the
most critical laboratory parameter to check immediately?
A. Liver function tests (LFTs)
B. Serum glucose levels
,C. Creatinine kinase levels
D. Absolute Neutrophil Count (ANC)
Answer: D
Conceptual Explanation: Clozapine carries a black box warning for agranulocytosis. A
fever and sore throat are clinical signs of infection, requiring an immediate check of the
ANC to rule out severe neutropenia.
3. Which mechanism of action distinguishes Second-Generation Antipsychotics (SGAs) from
First-Generation Antipsychotics (FGAs)?
A. D2 receptor antagonism only
B. Alpha-1 adrenergic agonism
C. 5HT2A receptor antagonism coupled with D2 antagonism
D. Muscarinic M1 receptor blockade
Answer: C
Conceptual Explanation: SGAs are defined by their ability to block both D2 and 5HT2A
receptors, which generally leads to a lower risk of extrapyramidal symptoms compared to
FGAs, which primarily focus on D2 blockade.
4. Lithium toxicity is exacerbated by the concurrent use of which class of medications due to
reduced renal clearance?
A. SSRIs
, B. NSAIDs
C. Calcium channel blockers
D. Atypical antipsychotics
Answer: B
Conceptual Explanation: NSAIDs can reduce renal blood flow and lithium clearance,
leading to increased lithium levels and potential toxicity.
5. A patient is diagnosed with depression and chronic neuropathic pain. Which
antidepressant would be most appropriate due to its dual mechanism?
A. Fluoxetine
B. Duloxetine
C. Escitalopram
D. Sertraline
Answer: B
Conceptual Explanation: Duloxetine is an SNRI (Serotonin-Norepinephrine Reuptake
Inhibitor) indicated for both major depressive disorder and chronic pain conditions like
diabetic neuropathy and fibromyalgia.
6. What is the primary mechanism of action for the medication Atomoxetine used in ADHD?
A. GABA receptor modulation
B. Dopamine reuptake inhibition
