USAHS NEUROSCIENCE EXAM 1 NEWEST 2024 WITH
COMPLETE QUESTIONS AND CORRECT VERIFIED ANSWERS
(DETAILED ANSWERS) ALREADY GRADED A+ 100%
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What makes up the central nervous system? - ANSWER-Brain and spinal cord
What makes up the peripheral nervous system? - 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? -
ANSWER-Neurulation
Cell proliferation
Migration and aggregation
,Formation of axonal and dendritic processes
Synatopgenesis
What is neurulation? - ANSWER-Formation of the neural crest and neural tube
(1st step of nervous system development)
What is the 2nd step of nervous system development? - ANSWER-Cell
proliferation within the nerual tube
What is the 3rd step of nervous system development? - ANSWER-Migration
and aggregation of cells within definitive locations
What is the 4th step of nervous system development? - ANSWER-Formation
and axonal and dendritic processes
What is synatopgenesis? - 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 ? - ANSWER-Ectoderm
Mesoderm
Endoderm
,The entire nervous system is derived from what structure? - ANSWER-
Embryonic ectoderm
What is the embryo called at day 14 of development? day 21? and day 28? -
ANSWER-Gastrula
Notochord
Neural tube
The nerual crest cells form most of what nervous system? - ANSWER-Peripheral
nervous system
What are some deficits or concerns of embryological development of the
nervous system? - ANSWER-Failure of posterior neruopore to close- spina
bifida
Failure of anterior neruopore to close- anencephaly
What is anencephaly? - 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 - ANSWER-Subdivisions: Telencephalon
and Diencephalon
Describe the subdivisions, derivates and cavities of the mesencephalon, that
develops during stage 1; neurulation - ANSWER-Subdivisions: Mesencephalon
Derivates: Midbrain
Cavities: Cerebral aquaduct
Describe the subdivisions, derivates and cavities of the rhombencephalon, that
develops during stage 1; neurulation - 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 - ANSWER-Subdivisions: Neural crest
and tube
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