Template:Ovary timeline table
From Embryology
Time | Carnegie Stage | Event |
---|---|---|
24 days | intermediate mesoderm, pronephros primordium | |
28 days | mesonephros and mesonephric duct | |
35 days | uteric bud, metanephros, urogenital ridge | |
42 days | cloacal divison, gonadal primordium (indifferent) | |
49 days | paramesonephric duct, gonadal differentiation | |
56 days | paramesonephric duct fusion (female) | |
100 days | fetal | primary follicles (ovary) |
6-7 weeks (GA 8-9 weeks) | mitotic PGC proliferation only | |
12-14 weeks (GA 14-16 weeks) | fetal | formation of syncitial clusters of oogonia and onset of meiotic germ cell differentiation |
15-18 weeks (GA 17–20 weeks) | fetal | breakdown of syncitial clusters and assembly of primordial follicles |
Links: ovary | oocyte | Timeline |