Also found in: Encyclopedia.


Close to or beside the embryonic mesonephros. See: paramesonephric duct.
Farlex Partner Medical Dictionary © Farlex 2012
References in periodicals archive ?
The paired paramesonephric duct goes through a series of developmental changes regulated by a number of molecular factors through initiation, invagination to the coelomic cavity and elongation of the ducts forming the uterine horns, begins fimbrial development and continues after birth.
The tubular structures of the female reproductive system derive from the paramesonephric ducts and serve to take the oocyte to the implantation site in the adult female (Miller & Gore, 2002).
During the formation of the reproductive system, paramesonephric ducts (also called Mullerian ducts) differentiate into the oviduct, uterus, cervix, and upper one-third of the vagina.
Prostatic utricle cysts result from the regression of the Mullerian paramesonephric ducts or decreased androgenic stimulation of the urogenital sinus.
The uterus develops from celomic epithelium during the 6th week of development during which it invaginates to form paramesonephric duct (mullerian duct).1-3
(17) Testicular appendages are remnants of the paramesonephric duct and are usually located at the superior testicular or epididymal head.
Primordial germ cells arising from the caudal portion of yolk sac migrate along the dorsal mesentery of the hindgut to the genital ridge.7 Paramesonephric ( Mllerian) ducts develop into uterine tubes, uterus and superior part of vagina.
Around the 5th week of pregnancy Mullerian ducts (or paramesonephric ducts) appear as developing structures, and each part of them has a different developing pattern to form the final shape and function of the Mullerian-derived organs.
The paramesonephric duct or Mullerian duct first appears in the human embryo at the 10mm stage and begins to regress in the male due to Mullerian inhibiting substance (MIS) (1).
(1997) found that TSP-1 is expressed in the spinal cord floor plate, in mesenchyme surrounding the developing paramesonephric duct, at the tips of growing lung bronchioles, in lens and in corneal endothelium.
Leyendecker and his group therefore believe that adenomyosis and endometriosis are "primarily diseases of the archimetra" (the Junctional Zone myometrium) and that there is a dislocation of the basal endometrium (with stem cell character and therefore the ability to resume embryonic growth), resulting in the ectopic formation of all "archimetrial" components such as epithelium, stroma, and paramesonephric smooth muscle cells (84).
On each side of the embryo, a smaller paramesonephric (Mullerian) duct appears between the mesonephros and mesonephric duct.