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
