Question

The duct which conveys sperm from the testis to the ejaculatory duct is,
A. Ureter
B. Ductus dodo lymphaticus
C. Vas deferens
D. Mullerian duct

Answer 1

Hint:
Ductus deferens, also known as Vas deferens is really a 45 cm long tube which always extends just at the back of each testis, pierces the surface of the body through the inguinal canal, then approaches the pelvic cavity.

Complete step by step answer:
It is a thick-walled tube in the male reproductive organs which holds sperm cells from epididymis where the sperm is contained prior to ejaculation. Each ductus defers results in an extended part, an ampulla that operates as a repository. There really are two ductus deferens, alike in function and structure, which originate from the two epididymis. The vas deferens stream is slightly bigger than those of the ductus epididymis, a path residing in the epididymis gland through which it arises. The membrane lining of the inner wall is indeed a moist and folded mucous membrane surface. The mucous membrane is made up of three layers of circular and continuous muscle tissue. These fibres cause the ducts to compress and hence permit the sperm and fluids to be carried.
So, the correct option is (C).

Additional Information:
Vas deferens evolve from the mesonephric or Wolffian ducts. Such ducts are developed from mesoderm, the inner layer of one of its three major germ layers of the embryo. The two remaining layers are just the ectoderm and the endoderm. Various male reproductive structures are built by budding off mesonephric ducts, like that of the seminal vesicles and epididymis. Having followed the budding of such structures, the left mesonephric ducts acquire a muscular coat and become the vas deferens. The rare genetic lack of vas deferens is pointed to as vasal aplasia. It leads to azoospermia, a scarcity of sperm within semen. Nevertheless, spermatogenesis, sperm formation, is traditionally natural. Therefore, childbirth can still be accomplished using infertility treatment technology.

Note:
The entire objective of vas deferens is to deliver sperm into the ejaculatory duct during the expulsion of the epididymis. This is managed by rhythmic displacement of fluid and semen just at the time of release. Vas deferens also serves to store sperm in association with epididymis and convoluted ductus deferens. The Vas deferens creates fluid that supports the transport of sperm, and resorbs deceased sperm and sperm portions that aren't even ejaculated.