WEBVTT

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Bir hepdäniň içinde,

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öýjükleriň içki öýjük

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ýygyndylary iki sany hipoblast

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we epiblast

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atly gatlaklary döredýärler.

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Hipoblast

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tohum haltajygy ösdürýär,

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şonyň üsti
bilen

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ene düwünçegini

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iýmitlendirýär.

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Epiblastyň öýjükleri amnion

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atly membranany döredýärler,

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we şonuň bilen bilelikde

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tä çaga dogulýança

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Düwünçegiň ösüşi dowam edýär.

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Takmynan iki ýarym (2 1/2)hepdeden

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epiblast 3 sany

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birikdiriji dokumalary

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ýa-da ektoderm,

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endoderm

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we mezoderm

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atly düwünçek gatlaklaryny döredýär.

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Ektoderm

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beýnini,

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oňurga ýiligini,

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nerwler,

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deri,

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dyrnak,

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saç

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ýaly köp organlary ösdürýär.

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Endoderm dem
alyş sistemasynyň

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we iýmit siňdiriji organlaryň

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esasyny döredýär we
bagyr we aşgazan asty mäzler

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ýaly  ýaşamak üçin

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wajyp bolan organlaryny ösdürýär.

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Mezoderm ýüregi,

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böwregi,

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süňki,

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kykyrdagy,

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muskullary,

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gan öýjüklerini

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we beýleki organlary emele getirýär.