受精过程 慕能
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30r Time of Corpus luteum 4:56 tube cell stage uterus Grafa file M.5-8 days 100 reach vicinity of ovum plantation in Perimetrium uterus inr 68 days blastocyst forms
chorionic villi olk sac amnionic fluid in amniotic cavity allantois umbilica cord chorion amnIon cavity of uterus
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胎盘半叶状毛底展 Placent Che orionId Fetal arter Maternal Fetal vein, s arter Materna ve Umbilical cord Uterus Umbilical vein Amniotic cavity Umbilical cord Fetal portion Maternal portion Endometrium of placenta of placenta
脸意龄彩成 级緻罨 Uterine vessels Uterine glands 88 Syncytiotrophoblast Cytotrophoblast adoxrnoedodboooix Roogoo Mesoderm Intervillous space
二级绒毛 Uterine vessels vterine glands Syncytiotrophoblast Cytotrophoblast Core of mesoderm 多( with fetal vessels Mesoderm Intervillous space
