NSG 552 Exams 1–3
Psychopharmacology Bundle: 300-Q Test
Bank with NGN Case Scenarios &
Rationales
EXAM 1: NEUROBIOLOGY, PHARMACOKINETICS, PHARMACODYNAMICS &
ANTIPSYCHOTICS
Questions 1–100
SECTION A: Basic Neurobiology (Questions 1–20)
Question 1
Which part of the neuron is primarily responsible for receiving signals from other
neurons?
A. Axon
B. Dendrites
C. Myelin sheath
D. Soma
Answer: B. Dendrites
,Rationale: Dendrites receive incoming electrical and chemical signals from other
neurons and transmit them toward the cell body. The axon transmits signals away
from the cell body. The myelin sheath insulates the axon, and the soma (cell body)
contains the nucleus.
Question 2
An action potential is initiated when which ion channels open?
A. Potassium channels
B. Sodium channels
C. Calcium channels
D. Chloride channels
Answer: B. Sodium channels
Rationale: Voltage-gated sodium channels open, allowing sodium influx and
depolarization of the neuron, which initiates the action potential. Potassium
channels then open for repolarization.
Question 3
Which neurotransmitter is the primary inhibitory neurotransmitter in the central
nervous system?
A. Glutamate
B. Dopamine
C. GABA
D. Norepinephrine
,Answer: C. GABA
Rationale: GABA (gamma-aminobutyric acid) is the main inhibitory
neurotransmitter in the CNS. It hyperpolarizes neurons, reducing neuronal
excitability. Glutamate is the primary excitatory neurotransmitter.
Question 4
Which neurotransmitter is the primary excitatory neurotransmitter in the central
nervous system?
A. GABA
B. Glycine
C. Glutamate
D. Serotonin
Answer: C. Glutamate
Rationale: Glutamate is the primary excitatory neurotransmitter in the CNS,
involved in learning, memory, and synaptic plasticity. GABA is the primary inhibitory
neurotransmitter.
Question 5
Dopamine is produced in which brain region and is involved in four major
pathways?
A. Locus coeruleus
B. Ventral tegmental area (VTA)
, C. Raphe nuclei
D. Nucleus basalis
Answer: B. Ventral tegmental area (VTA)
Rationale: Dopamine is produced in the VTA and is involved in the four major
dopaminergic pathways: mesolimbic, mesocortical, nigrostriatal, and
tuberoinfundibular.
Question 6
The mesolimbic pathway is associated with which functions?
A. Motor control and movement
B. Reward, motivation, and psychosis
C. Cognition and executive function
D. Prolactin regulation
Answer: B. Reward, motivation, and psychosis
Rationale: The mesolimbic pathway (VTA to nucleus accumbens) is associated
with reward and psychosis. Hyperactivity in this pathway produces positive
symptoms of schizophrenia (hallucinations, delusions).
Question 7
The nigrostriatal pathway is associated with which functions?
A. Reward and motivation
B. Motor control and movement
Psychopharmacology Bundle: 300-Q Test
Bank with NGN Case Scenarios &
Rationales
EXAM 1: NEUROBIOLOGY, PHARMACOKINETICS, PHARMACODYNAMICS &
ANTIPSYCHOTICS
Questions 1–100
SECTION A: Basic Neurobiology (Questions 1–20)
Question 1
Which part of the neuron is primarily responsible for receiving signals from other
neurons?
A. Axon
B. Dendrites
C. Myelin sheath
D. Soma
Answer: B. Dendrites
,Rationale: Dendrites receive incoming electrical and chemical signals from other
neurons and transmit them toward the cell body. The axon transmits signals away
from the cell body. The myelin sheath insulates the axon, and the soma (cell body)
contains the nucleus.
Question 2
An action potential is initiated when which ion channels open?
A. Potassium channels
B. Sodium channels
C. Calcium channels
D. Chloride channels
Answer: B. Sodium channels
Rationale: Voltage-gated sodium channels open, allowing sodium influx and
depolarization of the neuron, which initiates the action potential. Potassium
channels then open for repolarization.
Question 3
Which neurotransmitter is the primary inhibitory neurotransmitter in the central
nervous system?
A. Glutamate
B. Dopamine
C. GABA
D. Norepinephrine
,Answer: C. GABA
Rationale: GABA (gamma-aminobutyric acid) is the main inhibitory
neurotransmitter in the CNS. It hyperpolarizes neurons, reducing neuronal
excitability. Glutamate is the primary excitatory neurotransmitter.
Question 4
Which neurotransmitter is the primary excitatory neurotransmitter in the central
nervous system?
A. GABA
B. Glycine
C. Glutamate
D. Serotonin
Answer: C. Glutamate
Rationale: Glutamate is the primary excitatory neurotransmitter in the CNS,
involved in learning, memory, and synaptic plasticity. GABA is the primary inhibitory
neurotransmitter.
Question 5
Dopamine is produced in which brain region and is involved in four major
pathways?
A. Locus coeruleus
B. Ventral tegmental area (VTA)
, C. Raphe nuclei
D. Nucleus basalis
Answer: B. Ventral tegmental area (VTA)
Rationale: Dopamine is produced in the VTA and is involved in the four major
dopaminergic pathways: mesolimbic, mesocortical, nigrostriatal, and
tuberoinfundibular.
Question 6
The mesolimbic pathway is associated with which functions?
A. Motor control and movement
B. Reward, motivation, and psychosis
C. Cognition and executive function
D. Prolactin regulation
Answer: B. Reward, motivation, and psychosis
Rationale: The mesolimbic pathway (VTA to nucleus accumbens) is associated
with reward and psychosis. Hyperactivity in this pathway produces positive
symptoms of schizophrenia (hallucinations, delusions).
Question 7
The nigrostriatal pathway is associated with which functions?
A. Reward and motivation
B. Motor control and movement
