2 : développement du SN in utero Flashcards

(13 cards)

1
Q

Lors de la neurogénèse, quels sont les 4 stades de l’établissement des réseaux de neurones? Et où cela a-t-il lieu?

A

Au niveau de l’ectoderme dorsal :
- Prolifération cellulaire
- Migration cellulaire
- Différenciation cellulaire et croissance axonale
- Mort cellulaire et réorganisation synaptique

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2
Q

Qu’est ce que la prolifération cellulaire?

A

La multiplication par mitoses des cellules souches du SN (neuroblastes et cellules gliales) autour de la zone ventriculaire.

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3
Q

Que se passe-t-il lors de la migration cellulaire?

A

Les neuroblastes migrent en s’éloignant de la zone ventriculaire puis sont guidés vers la zone marginale (= surface externe du tube neural)

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3
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