Template:Ovary timeline table: Difference between revisions
From Embryology
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| intermediate mesoderm, pronephros primordium | | intermediate mesoderm, pronephros primordium | ||
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| 28 days | | 28 days | ||
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| uteric bud, metanephros, urogenital ridge | | uteric bud, metanephros, urogenital ridge | ||
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| 42 days | | 42 days | ||
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| paramesonephric duct, gonadal differentiation | | paramesonephric duct, gonadal differentiation | ||
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| 56 days | | 56 days | ||
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| fetal | | fetal | ||
| primary follicles (ovary) | | primary follicles (ovary) | ||
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| 6-7 weeks ({{GA}} 8-9 weeks) | | 6-7 weeks ({{GA}} 8-9 weeks) | ||
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| fetal | | fetal | ||
| formation of syncitial clusters of oogonia and onset of meiotic germ cell differentiation | | formation of syncitial clusters of oogonia and onset of meiotic germ cell differentiation | ||
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| 15-18 weeks ({{GA}} 17–20 weeks) | | 15-18 weeks ({{GA}} 17–20 weeks) | ||
| fetal | | fetal | ||
Revision as of 12:39, 11 May 2018
| 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 | ||
