2026 NU 664 FINAL EXAM 300 ACTUAL QUESTIONS
AND CORRECT ANSWERS WITH RATIONALE
LATEST UPDATE ALREADY GRADED A+ ASSURED
PASS
The NU 664 Final Exam evaluates advanced practice nursing knowledge in
psychiatric-mental health assessment, diagnosis, and treatment across the lifespan.
The exam comprehensively covers neuroanatomy and neurobiology,
psychopharmacology, psychotherapy modalities, and evidence-based clinical
management of psychiatric disorders. Candidates demonstrate competency in
differentiating schizophrenia, mood disorders, anxiety disorders, and trauma-
related conditions while applying pharmacokinetic principles and monitoring for
adverse effects. The test emphasizes developmental considerations, ethical and
legal standards, crisis intervention, suicide risk assessment, and integrated
treatment for co-occurring disorders. Success requires synthesizing biological,
psychological, and social factors to formulate comprehensive, patient-centered
treatment plans for diverse populations.
Section 1: Neuroanatomy, Neurobiology, and Brain Structures
(Questions 1-40)
Question 1
The brain structure believed to have a gating and filtering function through which
all sensory information passes en route to various cortical areas is the:
A) Amygdala
B) Reticular activating system
C) Hippocampus
D) Thalamus
Answer: B) Reticular activating system
Rationale: The reticular activating system (RAS) serves as a gating and filtering
mechanism for sensory information. All sensory input passes through the RAS en
route to various cortical areas, making it essential for arousal, attention, and
consciousness .
,Question 2
The portion of the brain implicated in addiction medicine where the reward
pathway lights up when substances are abused is the:
A) Prefrontal cortex
B) Nucleus accumbens
C) Amygdala
D) Hippocampus
Answer: B) Nucleus accumbens
Rationale: The nucleus accumbens is a key structure in the brain's reward pathway.
It is activated during substance abuse and is believed to be involved in addiction.
Long-term damage from substances like methamphetamine can cause chronic
feelings of loss of interest, flat affect, and social isolation .
Question 3
The principle excitatory neurotransmitter in the central nervous system is:
A) GABA
B) Serotonin
C) Glutamate
D) Dopamine
Answer: C) Glutamate
Rationale: Glutamate is the primary excitatory neurotransmitter in the central
nervous system. It plays a critical role in synaptic plasticity, learning, and memory.
Excessive glutamate activity is implicated in excitotoxicity and various
neurological disorders .
Question 4
Symptoms of anxiety and panic are associated with a low level of which
neurotransmitter?
A) Dopamine
B) GABA
C) Glutamate
D) Norepinephrine
Answer: B) GABA
,Rationale: GABA (gamma-aminobutyric acid) is the primary inhibitory
neurotransmitter in the brain. Low GABA activity is associated with symptoms of
anxiety and panic. Benzodiazepines work by enhancing GABA activity to reduce
anxiety .
Question 5
The brain's capacity to change in response to an event is called:
A) Neurogenesis
B) Brain plasticity
C) Neurotransmission
D) Synaptic pruning
Answer: B) Brain plasticity
Rationale: Brain plasticity refers to the brain's remarkable capacity to change and
reorganize itself in response to experiences, learning, or injury. This property
underlies learning, memory, and recovery from brain damage .
Question 6
Which dopamine pathway is associated with the positive symptoms of
schizophrenia such as hallucinations and delusions?
A) Mesocortical pathway
B) Mesolimbic pathway
C) Nigrostriatal pathway
D) Tuberoinfundibular pathway
Answer: B) Mesolimbic pathway
Rationale: Excessive dopamine in the mesolimbic pathway is the primary driver of
psychosis and positive symptoms. This pathway projects from the ventral
tegmental area to the limbic structures, including the nucleus accumbens and
amygdala .
Question 7
A deficit in which dopamine pathway is responsible for the cognitive and negative
symptoms of schizophrenia?
A) Mesolimbic pathway
B) Mesocortical pathway
C) Nigrostriatal pathway
D) Tuberoinfundibular pathway
, Answer: B) Mesocortical pathway
Rationale: The mesocortical pathway projects from the ventral tegmental area to
the prefrontal cortex. Dopamine deficit in this pathway is associated with negative
symptoms such as anhedonia, avolition, and cognitive impairment in schizophrenia
.
Question 8
A common side effect of Lithium therapy that indicates potential toxicity is:
A) Weight gain
B) Tremor and gastrointestinal distress
C) Sedation
D) Dry mouth
Answer: B) Tremor and gastrointestinal distress
Rationale: Lithium toxicity presents with symptoms including coarse tremor,
nausea, vomiting, diarrhea, ataxia, confusion, and in severe cases, seizures and
coma. Monitoring serum levels is essential to prevent toxicity .
Question 9
Which lobe of the brain is responsible for executive function and impulse control?
A) Temporal lobe
B) Occipital lobe
C) Frontal lobe
D) Parietal lobe
Answer: C) Frontal lobe
Rationale: The frontal lobe houses the prefrontal cortex, which is responsible for
executive functions including planning, decision-making, impulse control, and
personality. Dysfunction in the frontal lobe is implicated in schizophrenia and
ADHD .
Question 10
Which lobe of the brain is involved in auditory processing and memory?
A) Occipital lobe
B) Parietal lobe
C) Temporal lobe
AND CORRECT ANSWERS WITH RATIONALE
LATEST UPDATE ALREADY GRADED A+ ASSURED
PASS
The NU 664 Final Exam evaluates advanced practice nursing knowledge in
psychiatric-mental health assessment, diagnosis, and treatment across the lifespan.
The exam comprehensively covers neuroanatomy and neurobiology,
psychopharmacology, psychotherapy modalities, and evidence-based clinical
management of psychiatric disorders. Candidates demonstrate competency in
differentiating schizophrenia, mood disorders, anxiety disorders, and trauma-
related conditions while applying pharmacokinetic principles and monitoring for
adverse effects. The test emphasizes developmental considerations, ethical and
legal standards, crisis intervention, suicide risk assessment, and integrated
treatment for co-occurring disorders. Success requires synthesizing biological,
psychological, and social factors to formulate comprehensive, patient-centered
treatment plans for diverse populations.
Section 1: Neuroanatomy, Neurobiology, and Brain Structures
(Questions 1-40)
Question 1
The brain structure believed to have a gating and filtering function through which
all sensory information passes en route to various cortical areas is the:
A) Amygdala
B) Reticular activating system
C) Hippocampus
D) Thalamus
Answer: B) Reticular activating system
Rationale: The reticular activating system (RAS) serves as a gating and filtering
mechanism for sensory information. All sensory input passes through the RAS en
route to various cortical areas, making it essential for arousal, attention, and
consciousness .
,Question 2
The portion of the brain implicated in addiction medicine where the reward
pathway lights up when substances are abused is the:
A) Prefrontal cortex
B) Nucleus accumbens
C) Amygdala
D) Hippocampus
Answer: B) Nucleus accumbens
Rationale: The nucleus accumbens is a key structure in the brain's reward pathway.
It is activated during substance abuse and is believed to be involved in addiction.
Long-term damage from substances like methamphetamine can cause chronic
feelings of loss of interest, flat affect, and social isolation .
Question 3
The principle excitatory neurotransmitter in the central nervous system is:
A) GABA
B) Serotonin
C) Glutamate
D) Dopamine
Answer: C) Glutamate
Rationale: Glutamate is the primary excitatory neurotransmitter in the central
nervous system. It plays a critical role in synaptic plasticity, learning, and memory.
Excessive glutamate activity is implicated in excitotoxicity and various
neurological disorders .
Question 4
Symptoms of anxiety and panic are associated with a low level of which
neurotransmitter?
A) Dopamine
B) GABA
C) Glutamate
D) Norepinephrine
Answer: B) GABA
,Rationale: GABA (gamma-aminobutyric acid) is the primary inhibitory
neurotransmitter in the brain. Low GABA activity is associated with symptoms of
anxiety and panic. Benzodiazepines work by enhancing GABA activity to reduce
anxiety .
Question 5
The brain's capacity to change in response to an event is called:
A) Neurogenesis
B) Brain plasticity
C) Neurotransmission
D) Synaptic pruning
Answer: B) Brain plasticity
Rationale: Brain plasticity refers to the brain's remarkable capacity to change and
reorganize itself in response to experiences, learning, or injury. This property
underlies learning, memory, and recovery from brain damage .
Question 6
Which dopamine pathway is associated with the positive symptoms of
schizophrenia such as hallucinations and delusions?
A) Mesocortical pathway
B) Mesolimbic pathway
C) Nigrostriatal pathway
D) Tuberoinfundibular pathway
Answer: B) Mesolimbic pathway
Rationale: Excessive dopamine in the mesolimbic pathway is the primary driver of
psychosis and positive symptoms. This pathway projects from the ventral
tegmental area to the limbic structures, including the nucleus accumbens and
amygdala .
Question 7
A deficit in which dopamine pathway is responsible for the cognitive and negative
symptoms of schizophrenia?
A) Mesolimbic pathway
B) Mesocortical pathway
C) Nigrostriatal pathway
D) Tuberoinfundibular pathway
, Answer: B) Mesocortical pathway
Rationale: The mesocortical pathway projects from the ventral tegmental area to
the prefrontal cortex. Dopamine deficit in this pathway is associated with negative
symptoms such as anhedonia, avolition, and cognitive impairment in schizophrenia
.
Question 8
A common side effect of Lithium therapy that indicates potential toxicity is:
A) Weight gain
B) Tremor and gastrointestinal distress
C) Sedation
D) Dry mouth
Answer: B) Tremor and gastrointestinal distress
Rationale: Lithium toxicity presents with symptoms including coarse tremor,
nausea, vomiting, diarrhea, ataxia, confusion, and in severe cases, seizures and
coma. Monitoring serum levels is essential to prevent toxicity .
Question 9
Which lobe of the brain is responsible for executive function and impulse control?
A) Temporal lobe
B) Occipital lobe
C) Frontal lobe
D) Parietal lobe
Answer: C) Frontal lobe
Rationale: The frontal lobe houses the prefrontal cortex, which is responsible for
executive functions including planning, decision-making, impulse control, and
personality. Dysfunction in the frontal lobe is implicated in schizophrenia and
ADHD .
Question 10
Which lobe of the brain is involved in auditory processing and memory?
A) Occipital lobe
B) Parietal lobe
C) Temporal lobe
