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The mesonephric duct, also known as the Wolffian duct, archinephric duct, Leydig's duct or nephric duct, is a paired organ that develops in the early stages of embryonic development in humans and other mammals. It is an important structure that plays a critical role in the formation of male reproductive organs.
m, m. Right and left Müllerian ducts uniting together and running with the Wolffian ducts in gc, the genital cord. ot. The genital ridge from which either the ovary or testis is formed. ug. Sinus urogenitalis. W. Left Wolffian body. w, w. Right and left Wolffian ducts. B.—Diagram of the female type of sexual organs.
Right and left Müllerian ducts uniting together and running with the Wolffian ducts in gc, the genital cord m. Müllerian duct , the upper part of which remains as the hydatid of Morgagni ; the lower part, represented by a dotted line descending to the prostatic utricle , constitutes the occasionally existing cornu and tube of the uterus ...
The paramesonephric ducts play a critical role in the female reproductive tract and differentiate to form the uterine tubes, uterus, superior vagina as well as the uterine cervix. Many types of disorders can occur when this system is disrupted ranging from uterine and vaginal agenesis to the duplication of unwanted cells of the uterus and vagina.
The internal genitalia consist of two accessory ducts: mesonephric ducts (male) and paramesonephric ducts (female). The mesonephric system is the precursor to the male genitalia and the paramesonephric to the female reproductive system. [8] As development proceeds, one of the pairs of ducts develops while the other regresses.
The ducts pass backward lateral to the Wolffian ducts, but toward the posterior end of the embryo they cross to the medial side of these ducts, and thus come to lie side by side between and behind the latter—the four ducts forming what is termed the common genital cord, to distinguish it from the genital cords of the germinal epithelium seen ...
Embryos are formed with Wolffian and Mullerian ducts, which will either become the male or female reproductive tract, respectively. [8] In a male embryo, the testicular cords will induce the development of the Wolffian duct into the vas deferens, epididymis and the seminal vesicle and cause the repression and regression of the Mullerian duct. [4]
* m, m. Right and left Müllerian ducts uniting together and running with the Wolffian ducts in gc, the genital cord. * ot. The genital ridge from which either the ovary or testis is formed (upper right). * ug. Sinus urogenitalis. * W. Left Wolffian body. * w, w. Right and left Wolffian ducts.