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NeuroAnatomy > Embryonic Development of Nervous System > Flashcards

Embryonic Development of Nervous System Flashcards

0
Q

Nervous system develops from _______

A

ECTODERM

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1
Q

Outermost layer of embryo

A

Ectoderm

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2
Q

Skin (dermis), muscles, vascular systems

A

Mesoderm

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3
Q

GI and respiratory system

A

Endoderm

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4
Q

2 phases of nervous system development

A
  • neural tube formation

- brain differentiation

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5
Q

When does neural tube formation happens?

A

Days 18-26

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6
Q

When does brain differentiation happens?

A

Day 28 onwards….

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7
Q

Longitudinal thickening of ectoderm

A

Neural Plate

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8
Q

Edges of the neural plate folds

A

Neural Groove

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9
Q

The separation of cells adjacent to the groove from the ectoderm

A

Neural Crest

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10
Q

4th step of neural tube formation

A

Closure of neural tube

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11
Q

When does the superior neuropore closes?

A

Closure by day 27

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12
Q

When does inferior neuropore closes?

A

Closure AFTER 3 days

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13
Q

What does superior neuropore corresponds to?

A

Brain

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14
Q

What does inferior neuropore corresponds to?

A

Spinal Cord

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15
Q

Concentric layer comprising of cell bodies (gray matter)

A

Mantle layer

16
Q

Concentric layer comprising of axons (white matter)

A

Marginal layer

17
Q

For motor function

A

Anterior basal plate

18
Q

For sensory function

A

Posterior alar plate

19
Q

What are the 3 primary enlargement in brain differentiation?

A
  • Prosencephalon
  • Mesencephalon
  • Rhombencephalon
20
Q

Secondary enlargement of prosencephalon

A

Telencephalon and Diencephalon

21
Q

Secondary enlargement of mesencephalon

A

Mesencephalon

22
Q

Secondary enlargement of rhombencephalon

A

Metencephalon and Myelencephalon

23
Q

Mature structures of Telencephalon

A
  • Cerebral Hemispheres

- Lateral Ventricle

24
Q

Mature structures of diencephalon

A
  • Thalami

- 3rd ventricle

25
Q

Mature structures of mesencephalon

A
  • Midbrain

- Sylvian Aqueduct

26
Q

Mature structures of metencephalon

A
  • Pons
  • Cerebellum
  • upper 4th ventricle
27
Q

Mature structures of myelencephalon

A
  • Medulla Oblongata

- lower 4th ventricle

28
Q

Incomplete closure of spinal neural tube

A

Spina Bifida

29
Q

Incomplete closure of brain end of neural tube

A

Anencephaly

NeuroAnatomy (2 decks)

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