NU 578 Unit 1 Advanced Psychopharmacology Study Guide
2026/2027-USA
1. Which neurotransmitter is primarily responsible for the ‘reward’ system in
the brain?
A. Serotonin
B. Dopamine
C. GABA
D. Glutamate
Answer: B
Rationale: Dopamine is the key neurotransmitter associated with reward, motivation, and
motor control, particularly in the mesolimbic pathway.
2. Which cytochrome P450 enzyme is most frequently involved in the
metabolism of many antipsychotic and antidepressant drugs?
A. CYP3A4
B. CYP1A2
C. CYP2C19
D. CYP2D6
Answer: D
Rationale: CYP2D6 is a major enzyme responsible for the metabolism of a high percentage
of psychotropic medications.
,3. Steady state of a medication is typically achieved after how many half-lives?
A. 1 to 2
B. 2 to 3
C. 4 to 5
D. 7 to 10
Answer: C
Rationale: In clinical pharmacology, a drug is considered to have reached a steady state
after approximately 4 to 5 half-lives.
4. An agonist drug is defined as one that:
A. Mimics the action of a natural neurotransmitter
B. Blocks a receptor completely
C. Decreases the synthesis of neurotransmitters
D. Inhibits the reuptake of neurotransmitters
Answer: A
Rationale: An agonist binds to a receptor and activates it, mimicking the effect of the
endogenous ligand.
5. Which part of the neuron is responsible for receiving signals from other
neurons?
A. Axon
B. Soma
C. Dendrites
D. Myelin sheath
Answer: C
Rationale: Dendrites are the branch-like structures that receive incoming signals from
other neurons.
, 6. The ‘Black Box Warning’ on SSRIs primarily warns of increased risk for:
A. Serotonin syndrome
B. Tardive dyskinesia
C. Hypertensive crisis
D. Suicidal ideation in children and young adults
Answer: D
Rationale: The FDA requires a black box warning on all antidepressants regarding the
increased risk of suicidal thoughts and behaviors in patients under 25.
7. Which neurotransmitter is the primary inhibitory signal in the central nervous
system?
A. Norepinephrine
B. Glutamate
C. Acetylcholine
D. GABA
Answer: D
Rationale: Gamma-aminobutyric acid (GABA) is the major inhibitory neurotransmitter in
the brain.
8. What is the primary mechanism of action for Selective Serotonin Reuptake
Inhibitors (SSRIs)?
A. Blocking the SERT protein
B. Inhibiting MAO enzymes
C. Increasing serotonin synthesis
D. Antagonizing 5-HT2A receptors
Answer: A
Rationale: SSRIs work by blocking the serotonin transporter (SERT), preventing the
reabsorption of serotonin into the presynaptic neuron.
2026/2027-USA
1. Which neurotransmitter is primarily responsible for the ‘reward’ system in
the brain?
A. Serotonin
B. Dopamine
C. GABA
D. Glutamate
Answer: B
Rationale: Dopamine is the key neurotransmitter associated with reward, motivation, and
motor control, particularly in the mesolimbic pathway.
2. Which cytochrome P450 enzyme is most frequently involved in the
metabolism of many antipsychotic and antidepressant drugs?
A. CYP3A4
B. CYP1A2
C. CYP2C19
D. CYP2D6
Answer: D
Rationale: CYP2D6 is a major enzyme responsible for the metabolism of a high percentage
of psychotropic medications.
,3. Steady state of a medication is typically achieved after how many half-lives?
A. 1 to 2
B. 2 to 3
C. 4 to 5
D. 7 to 10
Answer: C
Rationale: In clinical pharmacology, a drug is considered to have reached a steady state
after approximately 4 to 5 half-lives.
4. An agonist drug is defined as one that:
A. Mimics the action of a natural neurotransmitter
B. Blocks a receptor completely
C. Decreases the synthesis of neurotransmitters
D. Inhibits the reuptake of neurotransmitters
Answer: A
Rationale: An agonist binds to a receptor and activates it, mimicking the effect of the
endogenous ligand.
5. Which part of the neuron is responsible for receiving signals from other
neurons?
A. Axon
B. Soma
C. Dendrites
D. Myelin sheath
Answer: C
Rationale: Dendrites are the branch-like structures that receive incoming signals from
other neurons.
, 6. The ‘Black Box Warning’ on SSRIs primarily warns of increased risk for:
A. Serotonin syndrome
B. Tardive dyskinesia
C. Hypertensive crisis
D. Suicidal ideation in children and young adults
Answer: D
Rationale: The FDA requires a black box warning on all antidepressants regarding the
increased risk of suicidal thoughts and behaviors in patients under 25.
7. Which neurotransmitter is the primary inhibitory signal in the central nervous
system?
A. Norepinephrine
B. Glutamate
C. Acetylcholine
D. GABA
Answer: D
Rationale: Gamma-aminobutyric acid (GABA) is the major inhibitory neurotransmitter in
the brain.
8. What is the primary mechanism of action for Selective Serotonin Reuptake
Inhibitors (SSRIs)?
A. Blocking the SERT protein
B. Inhibiting MAO enzymes
C. Increasing serotonin synthesis
D. Antagonizing 5-HT2A receptors
Answer: A
Rationale: SSRIs work by blocking the serotonin transporter (SERT), preventing the
reabsorption of serotonin into the presynaptic neuron.
