Qbank (Domains 1–5) – 88 Verified
Questions with Answers & Rationales |
Summer 2025 Update
Domain 1: Scientific Foundation (22 Questions)
1. As a PMHNP, you are aware of antipsychotic medication side effects. Which of the
following side effects has an insidious, delayed-onset typically 1 to 2 years after
initiation of the medication?
a) Dry mouth
b) Tardive dyskinesia
c) Sedation
d) Weight gain
Answer: b) Tardive dyskinesia
Rationale: Tardive dyskinesia is a delayed-onset side effect of antipsychotics, typically
appearing after 1-2 years due to prolonged dopamine receptor blockade.
2. Which area of the brain has been implicated in modulating pain and can help
explain how transcranial magnetic stimulation (TMS) decreases pain?
a) Prefrontal cortex
b) Insula cortex
c) Dorsolateral prefrontal cortex
d) Anterior cingulate cortex
Answer: d) Anterior cingulate cortex
Rationale: The anterior cingulate cortex modulates pain perception and is targeted by
TMS to reduce pain.
3. Which neurotransmitter is primarily associated with mood regulation and is
targeted by selective serotonin reuptake inhibitors (SSRIs)?
a) Dopamine
b) Serotonin
c) GABA
d) Norepinephrine
Answer: b) Serotonin
Rationale: SSRIs increase serotonin levels, which regulate mood, sleep, and appetite.
4. A patient with schizophrenia has elevated prolactin levels. Which medication is most
likely responsible?
a) Aripiprazole
b) Olanzapine
c) Risperidone
, d) Quetiapine
Answer: c) Risperidone
Rationale: Risperidone is a typical offender for hyperprolactinemia due to strong
dopamine D2 receptor antagonism.
5. Which of the following is a key principle of pharmacodynamics?
a) The study of drug absorption and distribution
b) The study of drug effects on the body
c) The study of drug metabolism and excretion
d) The study of drug formulation
Answer: b) The study of drug effects on the body
Rationale: Pharmacodynamics focuses on how drugs interact with target sites to produce
effects.
6. The mesolimbic pathway is primarily associated with which of the following?
a) Motor control
b) Pleasure and reward
c) Executive function
d) Memory consolidation
Answer: b) Pleasure and reward
Rationale: The mesolimbic pathway, involving the nucleus accumbens, regulates
pleasure and reward.
7. Which genetic polymorphism is associated with variable metabolism of psychotropic
medications?
a) CYP2D6
b) HLA-B
c) COMT
d) MTHFR
Answer: a) CYP2D6
Rationale: CYP2D6 polymorphisms affect the metabolism of many psychotropic drugs,
influencing efficacy and side effects.
8. Which brain structure is implicated in the regulation of fear and anxiety?
a) Hippocampus
b) Amygdala
c) Thalamus
d) Cerebellum
Answer: b) Amygdala
Rationale: The amygdala processes fear and anxiety responses.
9. Which of the following is a hallmark symptom of serotonin syndrome?
a) Bradycardia
b) Hyperthermia
c) Hyporeflexia
d) Hypotension
Answer: b) Hyperthermia
Rationale: Serotonin syndrome presents with hyperthermia, agitation, and hyperreflexia
due to excessive serotonin.
10. Which medication class is most likely to cause extrapyramidal symptoms (EPS)?
a) SSRIs