1 Exampromax - Stuvia US 2025/2026
USA Neuroscience - Exam 1 Questions and
Answers (100% Correct Answers) Already
Graded A+
embryological development: sequence of events
Ans: 1. neurulation 2. cell proliferation 3. migration & aggregation 4. cell
differentiation 5. synaptogenesis
neurulation
Ans: formation of neural crest and neural tube from ectoderm, mesoderm, and
endoderm; neural tube becomes CNS; fluid-filled cavities within neural tube
become ventricles
© 2025 Assignment Expert
Exampromax - Stuvia US
cell proliferation
Ans: within the neural tube;
ependymal or germinal layer-->lining of ventricles
intermediate or mantle layer-->gray matter
marginal layer-->white matter
migration & aggregation
Ans: of cells within definitive locations;
radial migration-->vertical
tangential migration-->horizontal/transverse (associated with movement of
brainstem)
cell differentiation
Ans: formation of axonal & dendritic processes; development of cranial nerves
synaptogenesis
Ans: formation of connections between nerve cell to nerve cells or muscle cells;
basis for neural plasticity
deficits in neurulation
Ans: failure of neural tube to close: posteriorly-->spina bifida, anteriorly--
>anencephaly
, 2 Exampromax - Stuvia US 2025/2026
prosencephalon
Ans: forebrain-->telencephalon & diencephalon
diencephalon
Ans: thalamus, hypothalamus, optic nerves, neurohypophysis, pineal gland
mesencephalon
Ans: midbrain
rhombencephalon
Ans: metencephalon (cerebellum and pons) and myelencephalon (medulla)
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function of brainstem
Exampromax - Stuvia US
Ans: basic bodily functions necessary for survival (e.g. HR, BP, RR)
cephalic flexure
Ans: divides brain and brainstem
cervical flexure
Ans: divides brainstem from spinal cord
sulcus limitans
Ans: works to divide dorsal from ventral tube
defects during migration stage of development
Ans: dyslexia, lissencephaly (smooth brain)
cranial nerve development
Ans: 1st: swallow & gag (14 weeks)-->V, VII, IX, X, XII
2nd: visual motor (25 weeks)-->II, III, IV, VI
3rd: hearing (28 weeks)-->VIII
4th: olfaction (31-32 weeks)-->I
growth of brain due to:
USA Neuroscience - Exam 1 Questions and
Answers (100% Correct Answers) Already
Graded A+
embryological development: sequence of events
Ans: 1. neurulation 2. cell proliferation 3. migration & aggregation 4. cell
differentiation 5. synaptogenesis
neurulation
Ans: formation of neural crest and neural tube from ectoderm, mesoderm, and
endoderm; neural tube becomes CNS; fluid-filled cavities within neural tube
become ventricles
© 2025 Assignment Expert
Exampromax - Stuvia US
cell proliferation
Ans: within the neural tube;
ependymal or germinal layer-->lining of ventricles
intermediate or mantle layer-->gray matter
marginal layer-->white matter
migration & aggregation
Ans: of cells within definitive locations;
radial migration-->vertical
tangential migration-->horizontal/transverse (associated with movement of
brainstem)
cell differentiation
Ans: formation of axonal & dendritic processes; development of cranial nerves
synaptogenesis
Ans: formation of connections between nerve cell to nerve cells or muscle cells;
basis for neural plasticity
deficits in neurulation
Ans: failure of neural tube to close: posteriorly-->spina bifida, anteriorly--
>anencephaly
, 2 Exampromax - Stuvia US 2025/2026
prosencephalon
Ans: forebrain-->telencephalon & diencephalon
diencephalon
Ans: thalamus, hypothalamus, optic nerves, neurohypophysis, pineal gland
mesencephalon
Ans: midbrain
rhombencephalon
Ans: metencephalon (cerebellum and pons) and myelencephalon (medulla)
© 2025 Assignment Expert
function of brainstem
Exampromax - Stuvia US
Ans: basic bodily functions necessary for survival (e.g. HR, BP, RR)
cephalic flexure
Ans: divides brain and brainstem
cervical flexure
Ans: divides brainstem from spinal cord
sulcus limitans
Ans: works to divide dorsal from ventral tube
defects during migration stage of development
Ans: dyslexia, lissencephaly (smooth brain)
cranial nerve development
Ans: 1st: swallow & gag (14 weeks)-->V, VII, IX, X, XII
2nd: visual motor (25 weeks)-->II, III, IV, VI
3rd: hearing (28 weeks)-->VIII
4th: olfaction (31-32 weeks)-->I
growth of brain due to:
