Periodo Somitico Flashcards

1
Q

Que elementos permiten la migracion de celulas de la cresta neural

A

Fibronectina+HCl

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2
Q

Nombre la diferenciacion de vesiculas encefalicas

A
  • PROENCEFALO
  • -> Telencefalo: corteza-nucleos
  • –>diencefalo: talamo-diencefalo
  • MESENCEFALO
  • ROMBOENCEFALO
  • ->Metencefalo: puente
  • –>Mielencefalo: bulbo
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3
Q

El número de somitos presentes en el embrión humano permite determinar…

A

la edad embrionaria

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4
Q

notocorda formara…

A

el núcleo pulposo en mamíferos.

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5
Q

Origen notocorda

A

Mesodemo

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6
Q

Los somitos son

A

metamericos

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7
Q

Zonas somitos

A
  • ventral/medial: esclorotomo
  • media: miotomo
  • externa: dermatomo
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8
Q

Que forma cada zona

A
  • ventral/medial: vertebras y costillas
  • media: musculatura estriada
  • externa: dermis
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9
Q

Mesordermo intermedio formara

A

Glandula suprarenal, riñon y gonadas

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10
Q

La piel se genera por expresion de..

A

BMP

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11
Q

El tubo neural se genera por expresion de..

A

SHH

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12
Q

Placas tubo neural

A
  • Marginal: prologaciones celulares
  • Del manto: somas neuronales de NEUROBLASTOS Y ESPONGIOBLASTOS
  • Epidimaria: celulas sin dividir
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13
Q

Placa alar.. Placa Basal… forman ….

A

Raiz sensitiva y motora respectivamente

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14
Q

Que se forma en placa del manto a partir de los ESPONGIOBLASTOS

A

fijas: E. epidimario
libre: Astroblastos y oligodendroblastos

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15
Q

Bolsa de Rathke

A

agujero que se forma por inferior a al mesencefalo y diencefalo. Dara orgien a la porcion glandular hipofisis
( adenohipofisis )

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16
Q

mesodermo lateral

A
  • SOMATICO: adosado al ectoderma –> miembros
  • —-celoma——
  • ESPLACNICO: adosado al endoderma–> revesitimiento intestino primitivos y aparato respiratorio
17
Q

diferenciacion somitica

A
  • por ventral SHH + PAX-1 = esclerotomo

- Dorsal WNT = dermotomo y miotomo

18
Q

Estomodeo?

A

boca primitiva

19
Q

prominecias cara del embrion

A

frontonasal, mandibulares y maxilares

20
Q

pack de lo arcos farigeos

A

cartilago+nervio+vasos

21
Q

cavidades del corazon tubular

A
  • tronco arterioso
  • bulbo cardiaco
  • ventriculo
  • atrio
  • seno venoso