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USAHS CLINICAL NEUROSCIENCE EXAM 3
2025-2026 UPDATED ACTUAL EXAM WITH
CORRECT SOLUTIONS.
What are the 5 steps of neurological development in order? -
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correct answer- Neurulation, cell proliferation, migration and
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aggregation, formation of axonal and dendritic processes, and
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synaptogenesis
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involves the formation of the neural crest and | | | | | | |
| neural tube. - correct answer- Neurulation
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Cell proliferation occurs within the
| | | | | . - correct
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answer- Neural tube
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During the migration and aggregation phase of embryological
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development the cells migrate/aggregate within
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locations. - correct answer- Definitive
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True or false: | |
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Cranial nerves are formed during the formation of axonal and
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dendritic processes phase of embryological development. -
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correct answer- True
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occurs around day 14 of development. - correct | | | | | | |
| answer- Neurulation |
During the embryo is in the process of
| | | | | | |
gastrolation. - correct answer- Neurulation
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The is three cell layers thick and includes the
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ectoderm, mesoderm, and endoderm. - correct answer-
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Gastrula
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The entire nervous system is derived from the
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. - correct answer- Embryonic ectoderm | | | | |
On day | | the notochord develops followed by the neural
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tube on day
| | | | . - correct answer- 21, 28
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The | develops into the the entire CNS. - | | | | | |
correct answer- Neural tube
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Neural crest cells develop into the
| | | | | | . - correct answer-
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PNS
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What two pathologies can occur during the first stage of
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embryological development? - correct answer- Spina bifida
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(failure of POSTERIOR neuropore to close) and anencephaly
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(failure of the ANTERIOR neuropore to close)
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What does the prosencephalon divide into? - correct answer-
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telencephalon and diencephalon
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What are the derivatives of the telencephalon and diencephalon?
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- correct answer- telencephalon: rhinoencephalon (lateral
| | | | | |
ventricles)
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diencephalon: thalamus, hypothalamus, optic nerves, | | | |
neurohypophysis, and pineal gland (third ventricle)
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What is the derivative of the mesencephalon? - correct answer-
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Midbrain (cerebral aqueduct)
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What does the rhombencephalon divide into? - correct answer-
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metencephalon and myelencephalon
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What are the derivatives of the metencephalon and
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myelencephalon? - correct answer- Metencephalon: cerebellum
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and pons (fourth ventricle)
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Myelencephalon: medulla (fourth ventricle) | | |
What does the primitive neural tube divide into? - correct
| | | | | | | | |
answer- Neural tube and neural crest
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What are the derivatives of the neural tube and neural crest? -
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correct answer- Neural tube: spinal cord (central canal)
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Neural crest: peripheral nerve ganglia
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The anterior commissure is
| | | | to the posterior
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commissure. - correct answer- Rostral
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USAHS CLINICAL NEUROSCIENCE EXAM 3
2025-2026 UPDATED ACTUAL EXAM WITH
CORRECT SOLUTIONS.
What are the 5 steps of neurological development in order? -
| | | | | | | | | |
correct answer- Neurulation, cell proliferation, migration and
| | | | | | |
aggregation, formation of axonal and dendritic processes, and
| | | | | | | |
synaptogenesis
|
involves the formation of the neural crest and | | | | | | |
| neural tube. - correct answer- Neurulation
| | | | |
Cell proliferation occurs within the
| | | | | . - correct
| |
answer- Neural tube
| | |
During the migration and aggregation phase of embryological
| | | | | | |
development the cells migrate/aggregate within
| | | | | |
locations. - correct answer- Definitive
| | | | |
True or false: | |
,2 | Page
| | | | | |
Cranial nerves are formed during the formation of axonal and
| | | | | | | | |
dendritic processes phase of embryological development. -
| | | | | | |
correct answer- True
| | |
occurs around day 14 of development. - correct | | | | | | |
| answer- Neurulation |
During the embryo is in the process of
| | | | | | |
gastrolation. - correct answer- Neurulation
| | | | |
The is three cell layers thick and includes the
| | | | | | | |
ectoderm, mesoderm, and endoderm. - correct answer-
| | | | | | |
Gastrula
|
The entire nervous system is derived from the
| | | | | | | |
. - correct answer- Embryonic ectoderm | | | | |
On day | | the notochord develops followed by the neural
| | | | | |
tube on day
| | | | . - correct answer- 21, 28
| | | | |
,3 | Page
| | | | | |
The | develops into the the entire CNS. - | | | | | |
correct answer- Neural tube
| | | |
Neural crest cells develop into the
| | | | | | . - correct answer-
| | |
PNS
|
What two pathologies can occur during the first stage of
| | | | | | | | |
embryological development? - correct answer- Spina bifida
| | | | | | |
(failure of POSTERIOR neuropore to close) and anencephaly
| | | | | | | |
(failure of the ANTERIOR neuropore to close)
| | | | | | |
What does the prosencephalon divide into? - correct answer-
| | | | | | | |
telencephalon and diencephalon
| | |
What are the derivatives of the telencephalon and diencephalon?
| | | | | | | |
- correct answer- telencephalon: rhinoencephalon (lateral
| | | | | |
ventricles)
|
diencephalon: thalamus, hypothalamus, optic nerves, | | | |
neurohypophysis, and pineal gland (third ventricle)
| | | | | |
What is the derivative of the mesencephalon? - correct answer-
| | | | | | | | |
Midbrain (cerebral aqueduct)
| | |
, 4 | Page
| | | | | |
What does the rhombencephalon divide into? - correct answer-
| | | | | | | |
metencephalon and myelencephalon
| | |
What are the derivatives of the metencephalon and
| | | | | | |
myelencephalon? - correct answer- Metencephalon: cerebellum
| | | | | |
and pons (fourth ventricle)
| | | |
Myelencephalon: medulla (fourth ventricle) | | |
What does the primitive neural tube divide into? - correct
| | | | | | | | |
answer- Neural tube and neural crest
| | | | | |
What are the derivatives of the neural tube and neural crest? -
| | | | | | | | | | |
correct answer- Neural tube: spinal cord (central canal)
| | | | | | | |
Neural crest: peripheral nerve ganglia
| | | |
The anterior commissure is
| | | | to the posterior
| |
commissure. - correct answer- Rostral
| | | | |
