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Flashcards in Correlative Neuroanatomy Deck (201)
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1

the brain weights

1.4 kg

2

2 substances important for energy metabolism in the brain

glucose and oxygen

3

the embryo is composed of 3 germ layers

ectoderm, mesoderm, endoderm

4

neural tissue appear at __ week of development

3rd week

5

neural folds fuse to form

neural tube

6

neural folds fusion begins in this region

cervical region

7

three primary transverse segments of the brain

procencephalon (forebrain)
mesencephalon (midbrain)
rhombencephalon (hindbrain)

8

five secondary segments of the brain

telencephalon
diencephalon
mesencephalon
metencephalon
myelencephalon

9

gives rise to the cerebral hemispheres

telencephalon

10

gives rise to thalamus and hypothalamus

diencephalon

11

gives rise to pons and cerebellum

metencephalon

12

gives rise to medulla

myelencephalon

13

myelination almost completed at

2 years

14

Myelin migration completed at

5 months

15

beginning of myelination

4 weeks

16

neural plate develops at

16 days

17

Neural groove and tube develops at

18 days

18

Neural tube defects are failure of

Dorsal induction

19

Enumerate conditions associated with Failure of dorsal induction

Craniorachischisis totalis
Anencephaly
Myeloschisis
Encephalocoele
Myelomeningocoele
Arnold-Chiari malformation

20

Failure of the neural tube to close spontaneously leads to

Neural tube disorders

21

Neural tube closure occurs between

3rd and 4th week of gestation

22

Midline defect of vertebral bodies

Spina bifida occulta

23

Spina bifida occulta typically involves

L5- S1

24

Manifestations of spina bifida occulta

Most are asymptomatic
Overlying skin manifestations:
Hair patch
Lipoma
Skin discoloration
Dermal sinus

25

Protrusion of meningeal sac plus cerebral cortex, cerebellum, or brainstem through midline skull defect

Encephalocele

26

Midline skull defect of encephalocele is called

called cranium bifidum

27

Most common location of encephalocele

Occipital

28

Most common location of encephalocele (Asians)

Frontal or nasofrontal areas

29

2 most common manifestations of spina bifida

Hair patch
Dermal sinus

30

Most severe form of dysraphism involving the vertebral column

Myelomeningocoele