NURS 5357 Exam 1 — Comprehensive Review | Questions and Answers with Rationales | 2026/2027
Update | 100% Correct - University of Texas, Tyler.
Questions 1–12 | Neuroanatomy, neural cells, neural networks, and electrical signaling
Question 1
A patient demonstrates impaired planning, difficulty controlling impulses, and poor decision-
making following a neurological injury. Which brain region is most likely involved?
A. Occipital cortex B. Prefrontal cortex C. Cerebellum D. Primary auditory cortex
Correct Answer: B. Prefrontal cortex
Rationale: The prefrontal cortex supports executive functions, including working memory,
planning, behavioral inhibition, judgment, and cognitive flexibility. Damage may impair the
patient's capacity to evaluate consequences and regulate behavior. The occipital cortex primarily
processes visual information, the cerebellum contributes to coordination and motor learning, and
the primary auditory cortex processes sound.
Question 2
A patient can recall childhood events but struggles to form new memories after a neurological
illness. Which structure is most strongly associated with the impaired function?
A. Amygdala B. Medulla oblongata C. Hippocampus D. Cerebellar vermis
Correct Answer: C. Hippocampus
Rationale: The hippocampus is essential for encoding and consolidating new declarative
memories, including episodic experiences. Damage can produce anterograde amnesia while
leaving previously consolidated long-term memories relatively preserved. This distinction is
particularly important when evaluating memory impairments in neuropsychiatric conditions.
Question 3
A patient shows exaggerated responses to threatening facial expressions during
neuropsychological testing. Increased activity in which brain structure is most directly associated
with detecting emotionally significant threats?
A. Amygdala B. Primary motor cortex C. Occipital pole D. Cerebellar cortex
Correct Answer: A. Amygdala
,Rationale: The amygdala participates in emotional salience detection, threat-related learning, fear
responses, and the processing of socially relevant emotional information. Its activity is
influenced by interactions with the prefrontal cortex, hippocampus, and other limbic structures. It
should not be understood as the brain's only emotional processing center.
Question 4
Which brain structure integrates autonomic, endocrine, and stress-related responses through its
influence on the hypothalamic-pituitary-adrenal (HPA) axis?
A. Thalamus B. Basal ganglia C. Corpus callosum D. Hypothalamus
Correct Answer: D. Hypothalamus
Rationale: The hypothalamus integrates information about internal physiological conditions and
coordinates homeostatic responses. During HPA-axis activation, hypothalamic corticotropin-
releasing hormone influences pituitary ACTH release, which subsequently stimulates cortisol
production by the adrenal cortex. Dysregulation of stress-response systems has been investigated
in multiple psychiatric disorders.
Question 5
A neuroscience student is reviewing brain structures responsible for directing sensory
information toward the cerebral cortex. Which structure serves as the principal relay for most
sensory modalities?
A. Amygdala B. Thalamus C. Hippocampus D. Hypothalamus
Correct Answer: B. Thalamus
Rationale: The thalamus relays and processes most sensory information before it reaches
appropriate cortical regions. It also contributes to attention, arousal, and coordination of cortical
activity. Olfaction is a notable exception because primary olfactory pathways initially reach
cortical regions without the same obligatory thalamic relay.
Question 6
A neurological disorder damages cells responsible for myelinating several axons within the
central nervous system. Which cell type is affected?
A. Schwann cells B. Microglia C. Oligodendrocytes D. Ependymal cells
Correct Answer: C. Oligodendrocytes
, Rationale: Oligodendrocytes form myelin around axons in the central nervous system. One
oligodendrocyte can myelinate segments of multiple axons. Schwann cells perform a
corresponding function in the peripheral nervous system, typically myelinating one axonal
segment per cell. Myelin permits rapid and efficient impulse conduction.
Question 7
Which glial cell type plays a significant role in extracellular neurotransmitter clearance, blood-
brain barrier support, and maintaining neuronal homeostasis?
A. Astrocyte B. Microglial cell C. Schwann cell D. Satellite cell
Correct Answer: A. Astrocyte
Rationale: Astrocytes help regulate extracellular potassium, clear neurotransmitters such as
glutamate, and maintain the neuronal microenvironment. Their perivascular endfeet contribute to
blood-brain barrier regulation, although endothelial tight junctions form the principal physical
barrier. Impaired astrocytic regulation can influence excitability and neuroinflammation.
Question 8
Which central nervous system cell functions primarily in immune surveillance, phagocytosis,
and responses to neural injury?
A. Oligodendrocyte B. Pyramidal neuron C. Ependymal cell D. Microglial cell
Correct Answer: D. Microglial cell
Rationale: Microglia are the resident immune cells of the central nervous system. They monitor
the neural environment, respond to injury and infection, remove debris, and participate in
synaptic remodeling. Their activity may be protective or contribute to pathological inflammation
depending on the biological context.
Question 9
The resting membrane potential of a typical neuron is largely maintained by which mechanism?
A. Equal sodium and potassium concentrations inside and outside the neuron B. Potassium
permeability through leak channels and maintained ionic gradients C. Continuous opening of
voltage-gated sodium channels D. Complete absence of electrical charges within the cell
Correct Answer: B. Potassium permeability through leak channels and maintained ionic
gradients
Update | 100% Correct - University of Texas, Tyler.
Questions 1–12 | Neuroanatomy, neural cells, neural networks, and electrical signaling
Question 1
A patient demonstrates impaired planning, difficulty controlling impulses, and poor decision-
making following a neurological injury. Which brain region is most likely involved?
A. Occipital cortex B. Prefrontal cortex C. Cerebellum D. Primary auditory cortex
Correct Answer: B. Prefrontal cortex
Rationale: The prefrontal cortex supports executive functions, including working memory,
planning, behavioral inhibition, judgment, and cognitive flexibility. Damage may impair the
patient's capacity to evaluate consequences and regulate behavior. The occipital cortex primarily
processes visual information, the cerebellum contributes to coordination and motor learning, and
the primary auditory cortex processes sound.
Question 2
A patient can recall childhood events but struggles to form new memories after a neurological
illness. Which structure is most strongly associated with the impaired function?
A. Amygdala B. Medulla oblongata C. Hippocampus D. Cerebellar vermis
Correct Answer: C. Hippocampus
Rationale: The hippocampus is essential for encoding and consolidating new declarative
memories, including episodic experiences. Damage can produce anterograde amnesia while
leaving previously consolidated long-term memories relatively preserved. This distinction is
particularly important when evaluating memory impairments in neuropsychiatric conditions.
Question 3
A patient shows exaggerated responses to threatening facial expressions during
neuropsychological testing. Increased activity in which brain structure is most directly associated
with detecting emotionally significant threats?
A. Amygdala B. Primary motor cortex C. Occipital pole D. Cerebellar cortex
Correct Answer: A. Amygdala
,Rationale: The amygdala participates in emotional salience detection, threat-related learning, fear
responses, and the processing of socially relevant emotional information. Its activity is
influenced by interactions with the prefrontal cortex, hippocampus, and other limbic structures. It
should not be understood as the brain's only emotional processing center.
Question 4
Which brain structure integrates autonomic, endocrine, and stress-related responses through its
influence on the hypothalamic-pituitary-adrenal (HPA) axis?
A. Thalamus B. Basal ganglia C. Corpus callosum D. Hypothalamus
Correct Answer: D. Hypothalamus
Rationale: The hypothalamus integrates information about internal physiological conditions and
coordinates homeostatic responses. During HPA-axis activation, hypothalamic corticotropin-
releasing hormone influences pituitary ACTH release, which subsequently stimulates cortisol
production by the adrenal cortex. Dysregulation of stress-response systems has been investigated
in multiple psychiatric disorders.
Question 5
A neuroscience student is reviewing brain structures responsible for directing sensory
information toward the cerebral cortex. Which structure serves as the principal relay for most
sensory modalities?
A. Amygdala B. Thalamus C. Hippocampus D. Hypothalamus
Correct Answer: B. Thalamus
Rationale: The thalamus relays and processes most sensory information before it reaches
appropriate cortical regions. It also contributes to attention, arousal, and coordination of cortical
activity. Olfaction is a notable exception because primary olfactory pathways initially reach
cortical regions without the same obligatory thalamic relay.
Question 6
A neurological disorder damages cells responsible for myelinating several axons within the
central nervous system. Which cell type is affected?
A. Schwann cells B. Microglia C. Oligodendrocytes D. Ependymal cells
Correct Answer: C. Oligodendrocytes
, Rationale: Oligodendrocytes form myelin around axons in the central nervous system. One
oligodendrocyte can myelinate segments of multiple axons. Schwann cells perform a
corresponding function in the peripheral nervous system, typically myelinating one axonal
segment per cell. Myelin permits rapid and efficient impulse conduction.
Question 7
Which glial cell type plays a significant role in extracellular neurotransmitter clearance, blood-
brain barrier support, and maintaining neuronal homeostasis?
A. Astrocyte B. Microglial cell C. Schwann cell D. Satellite cell
Correct Answer: A. Astrocyte
Rationale: Astrocytes help regulate extracellular potassium, clear neurotransmitters such as
glutamate, and maintain the neuronal microenvironment. Their perivascular endfeet contribute to
blood-brain barrier regulation, although endothelial tight junctions form the principal physical
barrier. Impaired astrocytic regulation can influence excitability and neuroinflammation.
Question 8
Which central nervous system cell functions primarily in immune surveillance, phagocytosis,
and responses to neural injury?
A. Oligodendrocyte B. Pyramidal neuron C. Ependymal cell D. Microglial cell
Correct Answer: D. Microglial cell
Rationale: Microglia are the resident immune cells of the central nervous system. They monitor
the neural environment, respond to injury and infection, remove debris, and participate in
synaptic remodeling. Their activity may be protective or contribute to pathological inflammation
depending on the biological context.
Question 9
The resting membrane potential of a typical neuron is largely maintained by which mechanism?
A. Equal sodium and potassium concentrations inside and outside the neuron B. Potassium
permeability through leak channels and maintained ionic gradients C. Continuous opening of
voltage-gated sodium channels D. Complete absence of electrical charges within the cell
Correct Answer: B. Potassium permeability through leak channels and maintained ionic
gradients
