WEEK 1: Congenital Anomalies and Embryology [Youtube Lec] Flashcards

1
Q

when does the CNS start to develop?

A

at the beginning of 3rd week

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2
Q

the neural plate invaginates to form the

A

neural groove

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3
Q

the notochord will form the

A

nucleus pulposus

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4
Q

when does anterior neuropore close? post?

A

25 and 27

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5
Q

in the devt of the spinal cord, the intermediate zone will be?

A

the grey matter of the spinal cord

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6
Q

marginal zone in the devt of spinal cord will be?

A

myelinated white matter

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7
Q

neuroblast will give rise to?

A

astrocytes and oligodendrocytes

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8
Q

microglia is derived from>

A

Surrounding mesenchyme

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9
Q

pia arachnoid and dura maters are formed from?

A

mesenchyme

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10
Q

what is spina bifida occulta vs cystica?

A

occulta yung arch lang yung problem, walang protrusion. pag cystica, tatlo yan
meningocele
myelomeningocele
myelocele ( rachischisis)

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11
Q

forebreain will give rise to?

A

telecephalon and diencephalon;
telencephalon - lateral ventricles
diencephalon - third ventricle

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12
Q

mesencephalon will give rise to?

A

midbrain and aqueduct of sylvius

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13
Q

rhombencephalon will give rise to?

A

pons, medulla, cerebellum and 4th ventricle

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14
Q

the 4 colliculi in the midbrain develops from?

A

tectum which developed from the alar plates

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15
Q

tegmentum of the midbrain develops from?

A

basal plate

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16
Q

the marginal layer of the basal plate forms the

A

crus cerebri

17
Q

difference of internal and external hydrocephalus?

A

internal hydroceph: the CSF accumulates within the ventricles of the brain; external: CSF accumulates between the brain and the arachnoid matter

18
Q

exencephaly

A

absence of the vault of the skull; anencephaly if wala ding brain

19
Q

results from the degeneration of midline structures leading to fusion of lateral ventricles, orbital and nasal cavities

A

holoprosencephaly