Question

Which is not formed by the Wolffian duct?
a. Epididymis
b. Vas deferens
c. Ejaculatory duct
d. Oviduct

Answer 1

The Wolffian duct is otherwise called the mesonephric duct. It is an undeveloped duct that associates the kidneys to the cloaca in the incipient organism. It is followed up on by the hormone testosterone. Within the sight of testosterone in guys, this separates into Epididymis, Vas deferens, Ejaculatory duct, and Rete testis.

Complete answer:

In female testosterone hormones are absent. Wolffian ducts are thus not formed in Oviduct. So, option D- Oviduct is correct.
The Wolffian duct (otherwise called the mesonephric duct) is one of the combined embryogenic tubules that channel the crude kidney (mesonephros) to the cloaca. It additionally radiates a horizontal branch framing the ureteric bud. In both the male and the female, the Wolffian channel forms into the trigon of the urinary bladder.
In the female, without testosterone, the Wolffian channel relapses. Nonetheless, considerations may continue coming about in the epoophoron and Skene's organs. Where a leftover exists parallel to the mass of the vagina, a Gartner's channel or Gartner's growth may shape.

In the male, at the point when the channels are presented to testosterone during embryogenesis, male sexual separation happens the Wolffian conduit forms into the rete testis, the ejaculatory pipes, the epididymis. So option A is incorrect.

In the Vas deferens and the fundamental vesicles, the prostate is shaped independently from the urogenital sinus. It is the main function of Wolffian ducts. So, option B is incorrect.

The ejaculatory canal is a duct through which semen passes. It opens into the urethra. So, option C is incorrect.

Hence, the correct answer is option (D).

Note: In a male, it forms into an arrangement of associated organs between the efferent ducts of the testis and the prostate, specifically the epididymis, the vas deferens, and the original vesicle. The prostate structures from the urogenital sinus and the structure of the efferent conduit from the mesonephric tubules. For this, the ducts must be presented to testosterone during embryogenesis. Testosterone ties to and actuates the androgen receptor.