5125 USAHS CLINICAL NEUROSCIENCE
COMPREHENSIVE EXAM PAPER TEST BANK
FULL SOLUTION UPDATED 2026 WITH 100%
CORRECT ANSWERS
◉______________ involves the formation of the neural crest and neural
tube. Answer: Neurulation
◉Cell proliferation occurs within the ________ _______. Answer:
Neural tube
◉During the migration and aggregation phase of embryological
development the cells migrate/aggregate within _________ locations.
Answer: Definitive
◉True or false:
Cranial nerves are formed during the formation of axonal and dendritic
processes phase of embryological development. Answer: True
◉____________ occurs around day 14 of development. Answer:
Neurulation
,◉During __________ the embryo is in the process of gastrolation.
Answer: Neurulation
◉The __________ is three cell layers thick and includes the ectoderm,
mesoderm, and endoderm. Answer: Gastrula
◉The entire nervous system is derived from the ____________
___________. Answer: Embryonic ectoderm
◉On day _____ the notochord develops followed by the neural tube on
day _______. Answer: 21, 28
◉The _______ ________ develops into the the entire CNS. Answer:
Neural tube
◉Neural crest cells develop into the ______. Answer: PNS
◉What two pathologies can occur during the first stage of
embryological development? Answer: Spina bifida (failure of
POSTERIOR neuropore to close) and anencephaly (failure of the
ANTERIOR neuropore to close)
◉What does the prosencephalon divide into? Answer: telencephalon
and diencephalon
,◉What are the derivatives of the telencephalon and diencephalon?
Answer: telencephalon: rhinoencephalon (lateral ventricles)
diencephalon: thalamus, hypothalamus, optic nerves, neurohypophysis,
and pineal gland (third ventricle)
◉What is the derivative of the mesencephalon? Answer: Midbrain
(cerebral aqueduct)
◉What does the rhombencephalon divide into? Answer: metencephalon
and myelencephalon
◉What are the derivatives of the metencephalon and myelencephalon?
Answer: Metencephalon: cerebellum and pons (fourth ventricle)
Myelencephalon: medulla (fourth ventricle)
◉What does the primitive neural tube divide into? Answer: Neural tube
and neural crest
◉What are the derivatives of the neural tube and neural crest? Answer:
Neural tube: spinal cord (central canal)
, Neural crest: peripheral nerve ganglia
◉The anterior commissure is _________ to the posterior commissure.
Answer: Rostral
◉The thalamus is ________to the frontal lobe. Answer: Caudal
◉The cerebellum is _________ to the pons. Answer: Dorsal
◉The anterior horn of the SC is _________ to the posterior horn of the
SC. Answer: Ventral
◉During the __________ ___________ phase of embryological
development the sulcus limitans pushes bilaterally inside of the neural
tube and starts to divide the tube into a ventral and dorsal portion.
Answer: Cell proliferation (ventral portion= baslar plate; efferent motor
and the dorsal portion= alar plate; sensory)
◉During the cell proliferation phase the innermost layer (ependyaml aka
germinal) creates the lining of the __________. Answer: Ventricles
(helps the cilia)
◉During the cell proliferation phase the intermediate layer becomes the
___________. Answer: Mantle (gray matter)
COMPREHENSIVE EXAM PAPER TEST BANK
FULL SOLUTION UPDATED 2026 WITH 100%
CORRECT ANSWERS
◉______________ involves the formation of the neural crest and neural
tube. Answer: Neurulation
◉Cell proliferation occurs within the ________ _______. Answer:
Neural tube
◉During the migration and aggregation phase of embryological
development the cells migrate/aggregate within _________ locations.
Answer: Definitive
◉True or false:
Cranial nerves are formed during the formation of axonal and dendritic
processes phase of embryological development. Answer: True
◉____________ occurs around day 14 of development. Answer:
Neurulation
,◉During __________ the embryo is in the process of gastrolation.
Answer: Neurulation
◉The __________ is three cell layers thick and includes the ectoderm,
mesoderm, and endoderm. Answer: Gastrula
◉The entire nervous system is derived from the ____________
___________. Answer: Embryonic ectoderm
◉On day _____ the notochord develops followed by the neural tube on
day _______. Answer: 21, 28
◉The _______ ________ develops into the the entire CNS. Answer:
Neural tube
◉Neural crest cells develop into the ______. Answer: PNS
◉What two pathologies can occur during the first stage of
embryological development? Answer: Spina bifida (failure of
POSTERIOR neuropore to close) and anencephaly (failure of the
ANTERIOR neuropore to close)
◉What does the prosencephalon divide into? Answer: telencephalon
and diencephalon
,◉What are the derivatives of the telencephalon and diencephalon?
Answer: telencephalon: rhinoencephalon (lateral ventricles)
diencephalon: thalamus, hypothalamus, optic nerves, neurohypophysis,
and pineal gland (third ventricle)
◉What is the derivative of the mesencephalon? Answer: Midbrain
(cerebral aqueduct)
◉What does the rhombencephalon divide into? Answer: metencephalon
and myelencephalon
◉What are the derivatives of the metencephalon and myelencephalon?
Answer: Metencephalon: cerebellum and pons (fourth ventricle)
Myelencephalon: medulla (fourth ventricle)
◉What does the primitive neural tube divide into? Answer: Neural tube
and neural crest
◉What are the derivatives of the neural tube and neural crest? Answer:
Neural tube: spinal cord (central canal)
, Neural crest: peripheral nerve ganglia
◉The anterior commissure is _________ to the posterior commissure.
Answer: Rostral
◉The thalamus is ________to the frontal lobe. Answer: Caudal
◉The cerebellum is _________ to the pons. Answer: Dorsal
◉The anterior horn of the SC is _________ to the posterior horn of the
SC. Answer: Ventral
◉During the __________ ___________ phase of embryological
development the sulcus limitans pushes bilaterally inside of the neural
tube and starts to divide the tube into a ventral and dorsal portion.
Answer: Cell proliferation (ventral portion= baslar plate; efferent motor
and the dorsal portion= alar plate; sensory)
◉During the cell proliferation phase the innermost layer (ependyaml aka
germinal) creates the lining of the __________. Answer: Ventricles
(helps the cilia)
◉During the cell proliferation phase the intermediate layer becomes the
___________. Answer: Mantle (gray matter)
