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Samenvatting Embryologie - Hoofdstuk 2: de eerste week
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Samenvatting hoofdstuk 2: de eerste week, embryologie
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, HOOFDSTUK 2-
BERUCHTING EN EERSTE WEEK
INHOUD
1 .
Bevruchting
2 .
Klievingsdelingen
3 .
Differentiatie
4 .
Implantatie
1 .
BEVRUCHTING
Hoe vindt zaadal de eicel ? klein bekken
an
weg dieper in
Thermotaxis konijnen -o
van
lagere hogver T lange afstand
:
Chemotaxie Zu-egel+ Zogdivun follikelallen produceren signaalmohcule Laadallen
:
korte
afstand i
aangetrokken door de eial Bevatten voe de
signaalmolecules
Zeukzaptae-familie
Laadcel eicel
~ slimerige massa allen
follikel allen Samulus ahocus
① Laadal
gaat evest dads
bevinden Zich in extzacellulaire mateix(zCM)
belangrijke component hyaluconswe
=
elmembraan beat het
enzyme hyaloconidase
② Laadal bindt
glycoproteine
aan Zand pellucida= spais-specifieke binding
doesichtig Ron de zaadal herkennen
specifieke skees van het
2P3-peoteoglyaan
-
1 Laadal ~ meerdere 2P3 molecules acroscomaactie bevindt zich in ZP
extracellulaire ruimte
acrasdem aut dade
excytose enzymen vi in de
Plaatselijke afbraak zond pellucida
③ Laadal
Just met einl tarn zaadal Veytoplasma einl
·
3 barrières
membraan
Jona rellucida
follikelallen
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