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USAHS CLINICAL NEUROSCIENCE EXAM
3 2025 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:
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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
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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)
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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
USAHS CLINICAL NEUROSCIENCE EXAM
3 2025 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
