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Ektoderm
ββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββ
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Das Ektoderm (von altgriechisch αΌΞΊΟΟΟ ektΓ³s βauΓenβ und Ξ΄ΞΟΞΌΞ± dΓ©rma βHautβ) ist das obere oder erste Keimblatt des Embryoblasten. Es ist die nach der Gastrulation auΓen liegende Zellschicht. Das primitive Ektoderm bringt durch den Vorgang der Neurulation (dem Beginn der Entwicklung des Nervensystems) das embryonale Mesoderm hervor (Primitivstreifen).
β’ Nervensystem und Nebennierenmark
β’ ZΓ€hne, speziell der Zahnschmelz
Contents
β’ Siehe auch
β’ Literatur
β’ Einzelnachweise
ββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββ
Siehe auch
Literatur
β’ Gertrud Scherf: WΓΆrterbuch Biologie. dtv, MΓΌnchen 1997, ISBN 3-423-32500-3
Einzelnachweise
cite-note-11. β Neil A. Campbell, Jane B. Reece: Biologie. Spektrum-Verlag 2003, ISBN 3-8274-1352-4, Seite 1208.