USAHS - UNIT 2 NEUROSCIENCE EXAM 1 ACTUAL QUESTIONS WITH VERIFIED ANSWERS BY EXPERTS 2024
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USAHS - UNIT 2 NEUROSCIENCE
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USAHS - UNIT 2 NEUROSCIENCE
USAHS - UNIT 2 NEUROSCIENCE EXAM 1 ACTUAL QUESTIONS WITH VERIFIED ANSWERS BY EXPERTS 2024 USAHS - UNIT 2 NEUROSCIENCE EXAM 1 ACTUAL QUESTIONS WITH VERIFIED ANSWERS BY EXPERTS 2024 USAHS - UNIT 2 NEUROSCIENCE EXAM 1 ACTUAL QUESTIONS WITH VERIFIED ANSWERS BY EXPERTS 2024 USAHS - UNIT 2 NEUROSCIENCE E...
USAHS - UNIT 2 NEUROSCIENCE
EXAM 1 ACTUAL QUESTIONS
WITH VERIFIED ANSWERS BY
EXPERTS 2024
What makes up the central nervous system? - CORRECT ANSWER>>>>Brain and
spinal cord
What makes up the peripheral nervous system? - CORRECT ANSWER>>>>CN and
ganglia
Spinal nerves and ganglia
Enteric nervous system
Sympathetic and parasympathetic
What are the 5 steps of embryological development of the nervous system? -
CORRECT ANSWER>>>>Neurulation
Cell proliferation
Migration and aggregation
Formation of axonal and dendritic processes
Synatopgenesis
What is neurulation? - CORRECT ANSWER>>>>Formation of the neural crest and
neural tube
(1st step of nervous system development)
What is the 2nd step of nervous system development? - CORRECT ANSWER>>>>Cell
proliferation within the nerual tube
What is the 3rd step of nervous system development? - CORRECT
ANSWER>>>>Migration and aggregation of cells within definitive locations
What is the 4th step of nervous system development? - CORRECT
ANSWER>>>>Formation and axonal and dendritic processes
,What is synatopgenesis? - CORRECT ANSWER>>>>Connections between nerve cell
to nerve cells or muscle cells (final step of nervous system development)
On day 14, the embryo undergoes gasturlation and forms the building blocks of our
nervous system. What are the 3 parts to this ? - CORRECT ANSWER>>>>Ectoderm
Mesoderm
Endoderm
The entire nervous system is derived from what structure? - CORRECT
ANSWER>>>>Embryonic ectoderm
What is the embryo called at day 14 of development? day 21? and day 28? -
CORRECT ANSWER>>>>Gastrula
Notochord
Neural tube
The nerual crest cells form most of what nervous system? - CORRECT
ANSWER>>>>Peripheral nervous system
What are some deficits or concerns of embryological development of the nervous
system? - CORRECT ANSWER>>>>Failure of posterior neruopore to close- spina
bifida
Failure of anterior neruopore to close- anencephaly
What is anencephaly? - CORRECT ANSWER>>>>Failure of anterior neruopore to
close during embryological development
Describe the subdivisions, derivates and cavities of the prosencephalon, that develops
during stage 1; neurulation - CORRECT ANSWER>>>>Subdivisions: Telencephalon
and Diencephalon
Derivates --> Cavities:
Rhinoencephalon --> Lateral ventrical
Thalmus, hypothalmus, optic nerves, neruophyophysis, pineal gland --> third ventricle
Describe the subdivisions, derivates and cavities of the mesencephalon, that develops
during stage 1; neurulation - CORRECT ANSWER>>>>Subdivisions: Mesencephalon
Derivates: Midbrain
,Cavities: Cerebral aquaduct
Describe the subdivisions, derivates and cavities of the rhombencephalon, that
develops during stage 1; neurulation - CORRECT ANSWER>>>>Subdivisions:
Metencephalon and Myelencephalon
Derivates: Cerebellum, pons and medula
Cavities: Fourth ventricle
Describe the subdivisions, derivates and cavities of the primitve nerual tube, that
develops during stage 1; neurulation - CORRECT ANSWER>>>>Subdivisions: Neural
crest and tube
What are the 2 primary flexures that help contain and align the neural tube within the
closed skull - CORRECT ANSWER>>>>Cephalic flexure (1st to develop)
Cervical flexure (2nd to develop)
What divides the neural tube into a ventral and dorsal half? - CORRECT
ANSWER>>>>Sulcus limitans
What is the dorsal portion of the neural tube called when the sulcus limitans divides the
tube in half during cell proliferation? - CORRECT ANSWER>>>>Alar plate
The alar plate is the future site for what tracts? - CORRECT ANSWER>>>>Sensory
neurons and tracts
What is the ventral portion of the neural tube called when the sulcus limitans divides the
tube in half during cell proliferation? - CORRECT ANSWER>>>>Basilar plate
(future site for efferent more portion)
What are the 3 layers the neural tube divides into during cell proliferation? - CORRECT
ANSWER>>>>Ependymal or germinal layer (lining of central canal and ventricles)
Intermediate or mantle layer
(gray matter of spinal cord)
Marginal layer
(white matter)
, During stage 3 of nervous system development, cells begin to migrate. What are the 2
types of migration? - CORRECT ANSWER>>>>Radial migration
Tangenital migration
Describe the difference between radial and tangential migration - CORRECT
ANSWER>>>>Radial migration- Occurs from spinal cord through telencephalon. Uses
radial glial cells
Tangential migration- Occurs within structures of brainstem. Shorter distances of
neurons are moved later in development
What dfects may occur due to problems with migration of nervous system
development? - CORRECT ANSWER>>>>Dyslexia
Lissencephaly- lesser intelligence, due to lack of infolding
What happens during stage 4, cell differentiation of nervous system development? -
CORRECT ANSWER>>>>Formation of axonal and dendritic processes
Development of cranial nerves
What are the 1st cranial nerves to develop during cellular proliferation? - CORRECT
ANSWER>>>>Swallow and gag nerves:
CN 5, 7, 9, 10 and 12
What are the 2nd cranial nerves to develop during cellular proliferation? - CORRECT
ANSWER>>>>Visual motor system:
CN 2, 3, 4 and 6
What are the 3rd cranial nerves to develop during cellular proliferation? - CORRECT
ANSWER>>>>Hearing:
CN 8
What are the 4th cranial nerves to develop during cellular proliferation? - CORRECT
ANSWER>>>>Olfaction:
CN 1
Describe what 2 processes occur during stage 5 synaptogenesis during nervous system
development? - CORRECT ANSWER>>>>Correlated with known types of permanent
learning
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