Wolffian duct


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Related to Wolffian duct: urogenital sinus

mes·o·neph·ric duct

a duct in the embryo draining the mesonephric tubules in the mesonephros; in the male, it becomes the ductus deferens; in the female, it becomes vestigial.
See also: longitudinal duct of epoophoron.

Wolffian duct

n.
The embryonic duct of the mesonephros, which in the male becomes the vas deferens and in both sexes gives rise to the ureter.
An embryonal duct that forms from the 25–30th days of gestation in association with the rudimentary pronephros, later becoming the mesonephric excretory duct, the ‘second embryonal kidney’, giving rise to the male reproductive system—rete testis, efferent ducts, epididymis, vas deferens, seminal vesicles. In females, the lack of testosterone results in Wolffian duct regression at the 10–11th week, a portion of which remains as embryonal ‘rests’—Gartner’s duct cysts, epoophoron, Skene's glands, paroophoron

mes·o·neph·ric duct

(mez'ō-nef'rik dŭkt)
A duct in the embryo draining the mesonephric tubules; in the male, it becomes the ductus deferens and ureter; in the female, it becomes the ureter's vestigial structures.
Synonym(s): wolffian duct.

Wolffian duct

the duct from the mesonephros in vertebrates. In fish and amphibia, it forms the urinary duct in females, and the urinogenital duct in males. In reptiles, birds and mammals it forms the VAS DEFERENS in males, and degenerates in females.

Wolff,

Kaspar F., German embryologist in Russia, 1733-1794.
wolffian body - one of three excretory organs appearing in the evolution of vertebrates. Synonym(s): canal of Oken; corpus of Oken; mesonephros
wolffian cyst - a cyst lying in the broad ligaments of the uterus and arising from any mesonephric structures.
wolffian duct - a duct in the embryo draining the mesonephric tubules. Synonym(s): mesonephric duct
wolffian rest - remnants of the wolffian duct in the female genital tract that give rise to cysts. Synonym(s): mesonephric rest
wolffian ridge - one of the paired longitudinal ridges developing in the dorsal body wall of the embryo. Synonym(s): urogenital ridge
wolffian tubules - Synonym(s): Kobelt tubules
References in periodicals archive ?
This duct is connected to the Wolffian duct by a thin mesentery and is encompassed by 1-2 layers of collagenous fibers (Fig.
The Wolffian duct is only responsible for the transportation of sperm from the testes to the cloaca, as 7-8 collecting ducts that do not communicate with the Wolffian duct drain the nephrons of the pelvic kidney.
* Character 1: Collecting duct morphology: The collecting ducts of the kidney exit the kidney laterally and communicate with the Wolffian duct individually along the entire length of the Wolffian duct that runs adjacent to the pelvic kidney (state 0).
Due to the presence of both Mullerian and Wolffian ducts on laparoscopic paraovarian and paratubal cyst biopsy, the current case was evaluated as 46,XY ovotesticular DSD.
In males (Figure 4-8b), the Wolffian ducts develop and the Mullerian ducts regress.
In the presence of testes, the Mullerian ducts regress and the Wolffian ducts develop into the epididymis and ductus deferens.
Morphometrics were used to analyze the effects and interactions of the sex-steroids and TCDD treatments on wolffian ducts. In sexually differentiated A.
The early embryo, for example, has Mullerian and Wolffian ducts. In females, the former develop into the oviduct, uterus, cervix, and vagina; in males, the latter give rise to the epididymis and vas deferens, tubes that carry sperm from the testes.
As development proceeds, the embryo establishes its sex, and either the Mullerian or Wolffian ducts regress.
The exact etiology of HWWS is still unknown, but it may be caused by the abnormal development of Mullerian and Wolffian ducts. [sup][1],[2] Its estimated occurrence is 0.1%-3.8%.
Testosterone produced by Leydig cells subsequently induces virilization of the Wolffian ducts into epididymides, vasa deferentia and seminal vesicles.
Initially both male and female embryos have wolffian ducts and mullerian ducts.