EMB2. De embryonale ontwikkeling - week 2 Flashcards

1
Q

trofoblast is gedifferentieerd in 2 lagen, welke?

A
  • synctiotrofoblast
  • cytotrofoblast
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2
Q

synctiotrofoblast

A
  • buitenste
  • vele kernen zonder celgrenzen
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3
Q

cytotrofoblast

A
  • binnenste
  • vormt later placenta
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4
Q

cellen van embryoblast verdelen in 2 lagen

A
  • epiblast
  • hypoblast
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5
Q

epiblast

A
  • Naar syncytiotrofoblast toe
  • blauw
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6
Q

hypoblast

A
  • naar blastocoel toe
  • geel
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7
Q

amnioblasten

A
  • scheiden zich af van de epiblast
  • vorming amnionholte
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8
Q

syncytiotrofoblast tijdens innestelling

A

vorming lacunes door het ontstaan van kleine holtes die met elkaar versmelten

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9
Q

cellen afkomstig van hypoblast

A
  • bekleden de blastocoel
  • membraan van Heuser/membrana exocoelomica
  • vorming dooierzak/lecithocoel
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10
Q

vorming extra-embryonaal mesoderm

A
  • door primitieve groeve migreren cellen die een laag vormen onder de cytotrofoblast
  • extra-embryonaal coeloom ontstaat door holtes die ontstaan en versmelten in het extra-embryonaal mesoderm
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11
Q

extra-embryonale somatopleura

A

extra-embryonale mesodermcellen tegen de trofoblast

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12
Q

extra-embryonale splanchnopleura

A

extra-embryonale mesodermcellen tegen de dooierzak

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