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Embryology > Development of CNS > Flashcards

Development of CNS Flashcards

1
Q

Ectoderm - 2 types

A

Surface and neuroectoderm

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2
Q

Neural groove is formed by

A

Neuroectoderm

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3
Q

NCC derived from

A

Ectoderm.

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4
Q

Cranial neuropore closes by

A

25th D

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5
Q

Caudal neuropore closes by

A

28th D

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6
Q

Failure of closure of Cranial neuropore

A

Anencephaly

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7
Q

Failure of closure of Caudal neuropore

A

Rachischisis

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8
Q

Rachischisis

A

Failure of closure of Caudal neuropore

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9
Q

Remnant of Cranial neuropore

A

Lamina terminalis

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10
Q

Lamina terminalis is remnant of

A

Cranial neuropore

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11
Q

Remnant of Caudal neuropore

A

Terminal ventricle

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12
Q

Terminal ventricle is a Remnant of

A

Caudal neuropore

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13
Q

Primary vesicles of brain

A

Prosencephalon
Mesencephalon
Rhombencephalon

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14
Q

Cranial part of NT forms

A

Brain

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15
Q

Caudal part of NT forms

A

Spinalcord

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16
Q

Secondary vesicles of brain are

A

Telen, Dien, Mesen, Meten and Mylencephalon.

17
Q

Telencephalon gives rise to

A

Cerebral cortex and Corpus striatum

18
Q

Cerebral cortex and Corpus striatum - derived from

A

Telencephalon

19
Q

Thalamus, hypothalamus, Metathalamus, Epithalamus, Pars Nervosa and Optic stalk are derived from which vesicle

A

Diencephalon

20
Q

Diencephalon gives rise to

A

Thalamus, hypothalamus, Metathalamus, Epithalamus, Pars Nervosa and Optic stalk

21
Q

Optic stalk gives rise to

A

Retina and optic nerve

22
Q

Pons and cerebellum are derived from which vesicle

A

Metencephalon

23
Q

Metencephalon gives rise to

A

Pons and cerebellum

24
Q

Myelencephalon gives rise to

A

medulla

25
Q

Medulla derived from

A

Myelencephalon

26
Q

Cavity in Telencephalon

A

Lateral ventricles

27
Q

Cavity in Diencephalon

A

3rd ventricle

28
Q

Cavity in Mesencephalon

A

Aqueduct of Sylvius

29
Q

Cavity in Meten and myelencephalon

A

4th ventricle

30
Q

Medial geniculate body is present in

A

Metathalamus of Diencephalon

31
Q

Substantia nigra

A

Mesencephalon

32
Q

Entire NT open - condition is called as

A

Craniorachischisis

33
Q

Craniorachischisis

A

Entire NT open

34
Q

Most severe form of NTD

A

Craniorachischisis

Embryology (16 decks)

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