Embryologie Flashcards

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1
Q

étapes

A

segmentation
blastulation
gastrulation
neurulation
organogenèse

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2
Q

segmentation

A

++ divisions par mitose (cellules blastomères)

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3
Q

seg (morula)

A

forme sans creux

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4
Q

blastula seg

A

sphère creuse
cavité blastocoele
couche ectoderme

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5
Q

gastrulation

A

invagination ectoderme par pôle végétal

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6
Q

archentéron (gastru)

A

2e cavité
intestin primitif

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7
Q

blastospore (gastru)

A

ouverture
bouche/anus
endoderme

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8
Q

organogenèse (neurulation)

A

formation mésoderme
formation corde dorsale
formation tube dorsal

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9
Q

mésoderme

A

tissu entre endo et ecto

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10
Q

coelome

A

cavité remplie de liquide pour organes

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11
Q

formation corde dorsale

A

notocorde
à partir de mésoderme
squelette simple
disparait

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12
Q

formation tube neural dorsal

A

à partir ectoderme
moelle épiniaire
encéphale

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