NR 546 Advanced Psychopharmacology Midterm Review:
(Latest 2026/2027 Update) Functional Neuroanatomy,
CYP450, Antipsychotics, Anxiolytics | Q&A | Grade A | 100%
Correct Verified Answers
Subject: Advanced Psychopharmacology – Functional Neuroanatomy (Mesolimbic, Nigrostriatal,
Mesocortical, Tuberoinfundibular Dopamine Pathways); Epigenetics & Genetics; CYP450
Inducers/Inhibitors (Carbamazepine, Phenytoin, Rifampin, St. John's Wort, Barbiturates, Cimetidine,
Ritonavir, Amiodarone, Ciprofloxacin, Ketoconazole, Grapefruit Juice); Receptor Pharmacology (Full
Agonist, Partial Agonist, Antagonist, Inverse Agonist); Neurotransmission (Signal Transduction,
Retrograde Transduction); First-Generation (FGA) vs Second-Generation (SGAs) Antipsychotics –
EPS, NMS, Tardive Dyskinesia, Akathisia, Acute Dystonia; Clozapine (Suicide Risk Reduction);
Antipsychotics for Hallucinations; Benzodiazepines (Pregnancy, Lactation, Weaning); Anxiety Disorders
(GAD, PTSD, OCD); Fear & Worry Pathophysiology (Fight-or-Flight); Buspirone; Propranolol for PTSD;
Forcible Medication; SSRIs Activation/Panic Attacks.
Source: NR 546 Midterm Blueprint 2026, Stahl's Essential Psychopharmacology, APA Guidelines.
Format: Q&A Guide with Clinical Rationale | Verified Answers | Grade A Guaranteed
Neuroscience matters – foundation for mental health prescribing
Correct Answer: Neuroscience is the foundation for mental health prescribing, moving toward
symptom-based prescribing rather than selecting drug class based on a diagnosis alone. Know
brain area associated with presenting symptoms AND medication mechanism of action on that brain
area.
1. Precision psychiatry: link symptoms (e.g., anhedonia, agitation, psychosis) to specific neural circuits,
then target those circuits with pharmacotherapy.
2. Example: hallucinations → mesolimbic dopamine hyperactivity → antipsychotic dopamine D2
blockade.
Functional neuroanatomy definition
Correct Answer: Classifying how regions within the nervous system relate to psychology and
behavior. If a particular area of the brain is affected, what is the expected response? Link
assessment to affected brain area.
1. Prefrontal cortex: executive function, impulse control. Amygdala: fear, anxiety, aggression.
Hippocampus: memory. Basal ganglia: motor control, reward.
Epigenetics definition and importance
Correct Answer: Study of influences on gene expression that occur without a DNA change. Involved
in switching genes on/off (controlling transcription/translation). Impacts mental health through
environmental influences (stress, trauma, diet, toxins) altering gene expression.
1. Epigenetic mechanisms: DNA methylation, histone modification, non-coding RNA. Can be passed
transgenerationally.
2. Example: early life stress → epigenetic changes in glucocorticoid receptors → HPA axis dysregulation
→ depression risk.
, CYP450 enzyme family – importance
Correct Answer: Enzyme family most important in metabolizing drugs. Always available in liver.
Evolved to eliminate toxic chemicals from plants. Function can be altered by alcohol and
barbiturates.
1. CYP450 isoenzymes: CYP3A4 (most common), CYP2D6, CYP2C9, CYP2C19, CYP1A2. Genetic
polymorphisms affect metabolism (poor, intermediate, extensive, ultrarapid metabolizers).
2. Inducers increase enzyme activity → decreased drug levels → therapeutic failure. Inhibitors decrease
activity → increased drug levels → toxicity.
CYP450 inducers mnemonic: Kenytoin Rides Shotgun in Barbie's Crazy Girly Motor Car
Correct Answer: Phenytoin, Rifampin, St. John's Wort, Barbiturates, Chronic alcohol use,
Griseofulvin, Modafinil, Carbamazepine.
1. Inducers increase metabolism of substrate drugs → lower plasma concentrations. May require dose
increase of substrate.
2. Carbamazepine (Tegretol) is an inducer (anticonvulsant/mood stabilizer). Combining carbamazepine
with another medication may reduce that medication's efficacy; may need dose adjustment.
CYP450 inhibitors mnemonic: CRACK AMIGOS
Correct Answer: Cimetidine, Ritonavir (protease inhibitor), Amiodarone, Ciprofloxacin,
Ketoconazole (and other azoles), Acute alcohol use, Macrolides (erythromycin, clarithromycin),
Isoniazid, Grapefruit Juice, Omeprazole, Sulfonamides.
1. Inhibitors decrease metabolism of substrate drugs → increased plasma levels → risk of toxicity and
adverse effects.
2. If you prescribe an inducer or inhibitor with a substrate, monitor for therapeutic failure (inducer) or
toxicity (inhibitor). Dose adjustments may be necessary.
Pharmacodynamics: Full agonist, partial agonist, antagonist, reverse agonist definitions
Correct Answer: Full agonist: produces 100% of maximum response. Partial agonist: produces less
than maximum response. Antagonist: binds and produces no effect (blocks endogenous ligand).
Reverse agonist: produces opposite effect of agonist.
1. Partial agonist has lower intrinsic activity; can act as antagonist in presence of full agonist (e.g.,
buprenorphine).
2. Inverse agonist stabilizes receptor in inactive state, reducing constitutive activity.
Neurotransmission types and why medications take weeks for response
Correct Answer: Signal transduction (intracellular molecular changes converting signal to
response) and retrograde transduction (endocannabinoids, nitric oxide) are slow processes.
Medications take weeks because they require downstream neuroadaptations (receptor up/down
regulation, second messenger changes, gene expression).
1. SSRIs increase serotonin immediately, but therapeutic response takes 4-6 weeks due to downstream
BDNF expression, neurogenesis, and receptor desensitization.
2. Retrograde signaling modifies presynaptic function.
(Latest 2026/2027 Update) Functional Neuroanatomy,
CYP450, Antipsychotics, Anxiolytics | Q&A | Grade A | 100%
Correct Verified Answers
Subject: Advanced Psychopharmacology – Functional Neuroanatomy (Mesolimbic, Nigrostriatal,
Mesocortical, Tuberoinfundibular Dopamine Pathways); Epigenetics & Genetics; CYP450
Inducers/Inhibitors (Carbamazepine, Phenytoin, Rifampin, St. John's Wort, Barbiturates, Cimetidine,
Ritonavir, Amiodarone, Ciprofloxacin, Ketoconazole, Grapefruit Juice); Receptor Pharmacology (Full
Agonist, Partial Agonist, Antagonist, Inverse Agonist); Neurotransmission (Signal Transduction,
Retrograde Transduction); First-Generation (FGA) vs Second-Generation (SGAs) Antipsychotics –
EPS, NMS, Tardive Dyskinesia, Akathisia, Acute Dystonia; Clozapine (Suicide Risk Reduction);
Antipsychotics for Hallucinations; Benzodiazepines (Pregnancy, Lactation, Weaning); Anxiety Disorders
(GAD, PTSD, OCD); Fear & Worry Pathophysiology (Fight-or-Flight); Buspirone; Propranolol for PTSD;
Forcible Medication; SSRIs Activation/Panic Attacks.
Source: NR 546 Midterm Blueprint 2026, Stahl's Essential Psychopharmacology, APA Guidelines.
Format: Q&A Guide with Clinical Rationale | Verified Answers | Grade A Guaranteed
Neuroscience matters – foundation for mental health prescribing
Correct Answer: Neuroscience is the foundation for mental health prescribing, moving toward
symptom-based prescribing rather than selecting drug class based on a diagnosis alone. Know
brain area associated with presenting symptoms AND medication mechanism of action on that brain
area.
1. Precision psychiatry: link symptoms (e.g., anhedonia, agitation, psychosis) to specific neural circuits,
then target those circuits with pharmacotherapy.
2. Example: hallucinations → mesolimbic dopamine hyperactivity → antipsychotic dopamine D2
blockade.
Functional neuroanatomy definition
Correct Answer: Classifying how regions within the nervous system relate to psychology and
behavior. If a particular area of the brain is affected, what is the expected response? Link
assessment to affected brain area.
1. Prefrontal cortex: executive function, impulse control. Amygdala: fear, anxiety, aggression.
Hippocampus: memory. Basal ganglia: motor control, reward.
Epigenetics definition and importance
Correct Answer: Study of influences on gene expression that occur without a DNA change. Involved
in switching genes on/off (controlling transcription/translation). Impacts mental health through
environmental influences (stress, trauma, diet, toxins) altering gene expression.
1. Epigenetic mechanisms: DNA methylation, histone modification, non-coding RNA. Can be passed
transgenerationally.
2. Example: early life stress → epigenetic changes in glucocorticoid receptors → HPA axis dysregulation
→ depression risk.
, CYP450 enzyme family – importance
Correct Answer: Enzyme family most important in metabolizing drugs. Always available in liver.
Evolved to eliminate toxic chemicals from plants. Function can be altered by alcohol and
barbiturates.
1. CYP450 isoenzymes: CYP3A4 (most common), CYP2D6, CYP2C9, CYP2C19, CYP1A2. Genetic
polymorphisms affect metabolism (poor, intermediate, extensive, ultrarapid metabolizers).
2. Inducers increase enzyme activity → decreased drug levels → therapeutic failure. Inhibitors decrease
activity → increased drug levels → toxicity.
CYP450 inducers mnemonic: Kenytoin Rides Shotgun in Barbie's Crazy Girly Motor Car
Correct Answer: Phenytoin, Rifampin, St. John's Wort, Barbiturates, Chronic alcohol use,
Griseofulvin, Modafinil, Carbamazepine.
1. Inducers increase metabolism of substrate drugs → lower plasma concentrations. May require dose
increase of substrate.
2. Carbamazepine (Tegretol) is an inducer (anticonvulsant/mood stabilizer). Combining carbamazepine
with another medication may reduce that medication's efficacy; may need dose adjustment.
CYP450 inhibitors mnemonic: CRACK AMIGOS
Correct Answer: Cimetidine, Ritonavir (protease inhibitor), Amiodarone, Ciprofloxacin,
Ketoconazole (and other azoles), Acute alcohol use, Macrolides (erythromycin, clarithromycin),
Isoniazid, Grapefruit Juice, Omeprazole, Sulfonamides.
1. Inhibitors decrease metabolism of substrate drugs → increased plasma levels → risk of toxicity and
adverse effects.
2. If you prescribe an inducer or inhibitor with a substrate, monitor for therapeutic failure (inducer) or
toxicity (inhibitor). Dose adjustments may be necessary.
Pharmacodynamics: Full agonist, partial agonist, antagonist, reverse agonist definitions
Correct Answer: Full agonist: produces 100% of maximum response. Partial agonist: produces less
than maximum response. Antagonist: binds and produces no effect (blocks endogenous ligand).
Reverse agonist: produces opposite effect of agonist.
1. Partial agonist has lower intrinsic activity; can act as antagonist in presence of full agonist (e.g.,
buprenorphine).
2. Inverse agonist stabilizes receptor in inactive state, reducing constitutive activity.
Neurotransmission types and why medications take weeks for response
Correct Answer: Signal transduction (intracellular molecular changes converting signal to
response) and retrograde transduction (endocannabinoids, nitric oxide) are slow processes.
Medications take weeks because they require downstream neuroadaptations (receptor up/down
regulation, second messenger changes, gene expression).
1. SSRIs increase serotonin immediately, but therapeutic response takes 4-6 weeks due to downstream
BDNF expression, neurogenesis, and receptor desensitization.
2. Retrograde signaling modifies presynaptic function.
