Neurulatie Flashcards

1
Q

cand incepe neurulatia

A

ziua 18
dureaza pana la sf sapt 4

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2
Q

perioadele neurulatiei

A

perioada santului neural
perioada tubului neural

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3
Q

neuroectoderm

A

ectoderm situat deasupra notocordului si inaintea nodului primitiv , pe linie mediana

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4
Q

placa neurala

A

banda longitudinala in forma de racheta , formata prin ingrosarea neuroectodermului

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5
Q

santul neural

A

format prin ridicarea si invaginarea marginilor placii neurale

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6
Q

plici neurale

A

jonctiunea neuroectodermala de pe marginile santului neural

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7
Q

plicile neurale se apropie intre ele , fuzioneaza si form

A

tubul neural

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8
Q

inchiderea tubului neural

A

ziua 21
in reg cervicala , in dreptul somitei 6
progresie caudala si craniala

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9
Q

tubul neural ramane deschis

A

la extremitati
2 orificii - neuropor cranial si neuropor caudal

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10
Q

cand se inchid neuroporii

A

sapt 4

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11
Q

ce se formeaza din portiunea mijlocie a tubului neural

A

maduva spinarii

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12
Q

ce se formeaza din partea ant a tubului neural

A

veziculele encefalului

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