Paramesonephric duct
| Paramesonephric duct | |
|---|---|
Urogenital sinus of female human embryo of eight and a half to nine weeks old. | |
Tail end of human embryo, from eight and a half to nine weeks old. | |
| Details | |
| Carnegie stage | 17 |
| Precursor | Intermediate mesoderm |
| Identifiers | |
| Latin | ductus paramesonephricus |
| MeSH | D009095 |
| TE | duct_by_E5.7.2.3.0.0.3 E5.7.2.3.0.0.3 |
| Anatomical terminology | |
The paramesonephric ducts (or Müllerian ducts) are paired ducts of the embryo in the reproductive system of humans and other mammals that run down the lateral sides of the genital ridge and terminate at the sinus tubercle in the primitive urogenital sinus. They form in both sexes during 6th week of fetal development.
In the female, go on to form the fallopian tubes/oviducts, uterus, cervix, and the upper one-third of the vagina.
In males fetuses, they are normally made to regress by anti-Müllerian hormone which begins to be secreted by the testes during 8th week of fetal development.
Each maramesonephric duct is situated just lateral to the mesonephric ducts (Wolffian duct) of the same side.