Müllerian duct

(redirected from Paramesonephric ducts)
Also found in: Medical.

Müllerian duct

[mi′ler·ē·ən ′dəkt]
(embryology)
References in periodicals archive ?
An imperforate hymen results from failure of the caudal paramesonephric ducts to fuse with the urogenital sinus, leading to an obstruction located between the vagina and the vestibule, just cranial to the opening of the urethra [1, 2].
Prostatic utricle cysts result from the regression of the Mullerian paramesonephric ducts or decreased androgenic stimulation of the urogenital sinus.
INTRODUCTION: Uterus developed from the fusion of bilateral Mullerian or Paramesonephric ducts.
Hymen arises from the paramesonephric ducts and developmental aberrations of which may lead to a condition known as persistent hymen.
1) Duplication of the uterus results from the lack of fusion of the paramesonephric ducts in a local area or throughout their normal line of fusion.
The paramesonephric ducts have regressed leaving only the mesonephric ducts that become connected with the testes via a few remaining tubules of the mesonephros.
The cranial part of the paramesonephric ducts forms the uterine tubes, and the coelomic invagination remains as the pelvic opening of the fallopian tube.
In females, the lack of these hormones causes the opposite; the mesonephric ducts degenerate and the paramesonephric ducts continue to grown, fuse in the midline, and ultimately differentiate into the fallopian tubes, uterus, cervix and vagina.
In females the mesonephric ducts degenerate and by twelve weeks due to lack of testosterone and the paired paramesonephric developed on lateral aspect of mesonephrons to reach urogenital sinus at nine weeks and unfused lateral arms of paramesonephric ducts forming fallopian tubes.