embryo Flashcards

1
Q

adult derivative of notochord

A

nucleus pulposus of intervertebral disk

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2
Q

name: forebrain

A

prosencephalon

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3
Q

name: midbrain

A

mesencephalon

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4
Q

name: hindbrain

A

rhombencephalon

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5
Q

forebrain (prosencephalon) becomes

A

telencephalon and diencephalon

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6
Q

hindbrain (rhombencephalon) becomes

A

metencephalon and myelencephalon

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7
Q

telencephalon (walls/cavities - adult derivatives)

A

walls: cerebral hemispheres, cavities: lateral ventricles

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8
Q

diencephalon (walls/cavities - adult derivatives)

A

walls: thalamus, cavities: third ventricle

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9
Q

mesencephalon (walls/cavities - adult derivatives)

A

walls: midbrain, cavities: cerebral aqueduct

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10
Q

metencephalon (walls/cavities - adult derivatives)

A

walls: pons/cerebellum, cavities: upper part of fourth ventricle

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11
Q

myelencephalon (walls/cavities - adult derivatives)

A

walls: medulla, cavities: upper part of fourth ventricle

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12
Q

When do NTD occur?

A

4th week

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13
Q

confirmatory test for NTD

A

high acetylcholesterase an amniotic fluid

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14
Q

Tuft of hair or skin dimple

A

spina bifida occulta

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15
Q

Defect in spina bifida occulta

A

failure of bony spinal canal to close but no herniation

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16
Q

alar plate: sensory or motor?

A

dorsal = sensory

17
Q

basal plate: sensory or motor?

A

ventral = motor

18
Q

ependymal cell origin

A

neuroectoderm

19
Q

astrocytes cell origin

A

neuroectoderm

20
Q

cns neurons cell origin

A

neuroectoderm

21
Q

oligodendroglia cell origin

A

neuroectoderm

22
Q

microglia cell origin

A

mesoderm

23
Q

pns neurons cell origin

A

neural crest

24
Q

schwann cells origin

A

neural crest