WGU D574 Neuropsychology
2026/2027: Complete 200 Questions
And Answers with Detailed
Rational\Graded A+
Question 1: Which structure serves as the primary relay station
for sensory information (excluding smell) en route to the
cerebral cortex?
A) Hypothalamus
B) Thalamus
C) Basal ganglia
D) Hippocampus
Answer: B
Rationale: The thalamus processes and relays nearly all sensory
input to appropriate cortical regions. The hypothalamus (A)
regulates homeostasis and autonomic functions. The basal
ganglia (C) are primarily involved in motor control and
procedural learning. The hippocampus (D) is critical for memory
consolidation. The thalamus acts as the brain's sensory
"gateway," with the exception of olfactory information which
bypasses this structure .
Question 2: Damage to Broca's area most typically results in:
,A) Fluent aphasia with poor comprehension
B) Non-fluent, effortful speech with relatively preserved
comprehension
C) Pure word deafness
D) Alexia without agraphia
Answer: B
Rationale: Broca's area (left inferior frontal gyrus) is critical for
speech production. Damage causes expressive (non-fluent)
aphasia characterized by effortful, agrammatic speech with
relatively intact comprehension. Wernicke's area damage (A)
produces fluent but nonsensical speech with impaired
comprehension. Pure word deafness (C) involves auditory
processing deficits. Alexia without agraphia (D) results from
damage to the left occipitotemporal region .
Question 3: A patient presents with inability to voluntarily
initiate movements, muscle rigidity, and tremor at rest. These
symptoms are most characteristic of damage to which brain
structure?
A) Cerebellum
B) Substantia nigra
C) Hippocampus
D) Amygdala
Answer: B
Rationale: These are classic symptoms of Parkinson's disease,
which results from degeneration of dopamine-producing
neurons in the substantia nigra pars compacta. The cerebellum
,(A) coordinates movement but damage causes ataxia, not
rigidity/tremor. The hippocampus (C) is crucial for memory
formation. The amygdala (D) processes emotions and
emotional memory .
Question 4: The corpus callosum primarily functions to:
A) Connect the cerebellum to the brainstem
B) Transfer motor commands from cortex to spinal cord
C) Connect the two cerebral hemispheres
D) Produce cerebrospinal fluid
Answer: C
Rationale: The corpus callosum is the largest white matter
tract, containing approximately 200 million fibers that facilitate
interhemispheric communication. Damage produces "split-
brain" syndrome where information cannot be transferred
between hemispheres. The cerebellum-brainstem connection
(A) involves cerebellar peduncles. Motor commands to spinal
cord (B) travel via the corticospinal tract. Cerebrospinal fluid
production (D) occurs in the choroid plexus .
Question 5: A patient with damage to the right parietal lobe
would most likely exhibit:
A) Aphasia
B) Visuospatial neglect
C) Apraxia
D) Prosopagnosia
, Answer: B
Rationale: The right parietal lobe is dominant for visuospatial
attention and processing. Damage typically causes contralateral
neglect (hemispatial neglect), where the patient ignores the left
side of space. Aphasia (A) typically results from left hemisphere
damage. Apraxia (C) can occur with left parietal lesions.
Prosopagnosia (D) results from fusiform gyrus damage, often
bilateral .
Section 2: Neurotransmitters and Neurological Disorders
Question 6: Which neurotransmitter system is primarily
implicated in the pathophysiology of Alzheimer's disease?
A) Dopamine
B) Acetylcholine
C) Serotonin
D) GABA
Answer: B
Rationale: Alzheimer's disease involves degeneration of
cholinergic neurons, particularly in the basal forebrain. The
cholinergic deficit correlates strongly with memory impairment.
Parkinson's disease involves dopamine depletion (A).
Depression often involves serotonin dysregulation (C). Anxiety
disorders may involve GABA abnormalities (D). Cholinesterase
inhibitors are used to treat Alzheimer's by increasing
acetylcholine levels .
2026/2027: Complete 200 Questions
And Answers with Detailed
Rational\Graded A+
Question 1: Which structure serves as the primary relay station
for sensory information (excluding smell) en route to the
cerebral cortex?
A) Hypothalamus
B) Thalamus
C) Basal ganglia
D) Hippocampus
Answer: B
Rationale: The thalamus processes and relays nearly all sensory
input to appropriate cortical regions. The hypothalamus (A)
regulates homeostasis and autonomic functions. The basal
ganglia (C) are primarily involved in motor control and
procedural learning. The hippocampus (D) is critical for memory
consolidation. The thalamus acts as the brain's sensory
"gateway," with the exception of olfactory information which
bypasses this structure .
Question 2: Damage to Broca's area most typically results in:
,A) Fluent aphasia with poor comprehension
B) Non-fluent, effortful speech with relatively preserved
comprehension
C) Pure word deafness
D) Alexia without agraphia
Answer: B
Rationale: Broca's area (left inferior frontal gyrus) is critical for
speech production. Damage causes expressive (non-fluent)
aphasia characterized by effortful, agrammatic speech with
relatively intact comprehension. Wernicke's area damage (A)
produces fluent but nonsensical speech with impaired
comprehension. Pure word deafness (C) involves auditory
processing deficits. Alexia without agraphia (D) results from
damage to the left occipitotemporal region .
Question 3: A patient presents with inability to voluntarily
initiate movements, muscle rigidity, and tremor at rest. These
symptoms are most characteristic of damage to which brain
structure?
A) Cerebellum
B) Substantia nigra
C) Hippocampus
D) Amygdala
Answer: B
Rationale: These are classic symptoms of Parkinson's disease,
which results from degeneration of dopamine-producing
neurons in the substantia nigra pars compacta. The cerebellum
,(A) coordinates movement but damage causes ataxia, not
rigidity/tremor. The hippocampus (C) is crucial for memory
formation. The amygdala (D) processes emotions and
emotional memory .
Question 4: The corpus callosum primarily functions to:
A) Connect the cerebellum to the brainstem
B) Transfer motor commands from cortex to spinal cord
C) Connect the two cerebral hemispheres
D) Produce cerebrospinal fluid
Answer: C
Rationale: The corpus callosum is the largest white matter
tract, containing approximately 200 million fibers that facilitate
interhemispheric communication. Damage produces "split-
brain" syndrome where information cannot be transferred
between hemispheres. The cerebellum-brainstem connection
(A) involves cerebellar peduncles. Motor commands to spinal
cord (B) travel via the corticospinal tract. Cerebrospinal fluid
production (D) occurs in the choroid plexus .
Question 5: A patient with damage to the right parietal lobe
would most likely exhibit:
A) Aphasia
B) Visuospatial neglect
C) Apraxia
D) Prosopagnosia
, Answer: B
Rationale: The right parietal lobe is dominant for visuospatial
attention and processing. Damage typically causes contralateral
neglect (hemispatial neglect), where the patient ignores the left
side of space. Aphasia (A) typically results from left hemisphere
damage. Apraxia (C) can occur with left parietal lesions.
Prosopagnosia (D) results from fusiform gyrus damage, often
bilateral .
Section 2: Neurotransmitters and Neurological Disorders
Question 6: Which neurotransmitter system is primarily
implicated in the pathophysiology of Alzheimer's disease?
A) Dopamine
B) Acetylcholine
C) Serotonin
D) GABA
Answer: B
Rationale: Alzheimer's disease involves degeneration of
cholinergic neurons, particularly in the basal forebrain. The
cholinergic deficit correlates strongly with memory impairment.
Parkinson's disease involves dopamine depletion (A).
Depression often involves serotonin dysregulation (C). Anxiety
disorders may involve GABA abnormalities (D). Cholinesterase
inhibitors are used to treat Alzheimer's by increasing
acetylcholine levels .
