The vas deferens, also called ductus deferens, (Latin: "carrying-away vessel") is part of the humanmaleanatomy. There are two of them; they are muscular tubes (surrounded by smooth muscle) connecting the left and right epididymis to the ejaculatory ducts in order to move sperm. Each tube is about 30 centimeters long. During ejaculation the wall of the vas deferens thickens and thins itself, thus propelling the sperm forward.
The ductusdeferens, the excretory duct of the testis, is the continuation of the canal of the epididymis.
Commencing at the lower part of the tail of the epididymis it is at first very tortuous, but gradually becoming less twisted it ascends along the posterior border of the testis and medial side of the epididymis, and, as a constituent of the spermatic cord, traverses the inguinal canal to the abdominal inguinal ring.
A small triangular area of the fundus of the bladder, between the ductus deferentes laterally and the bottom of the rectovesical excavation of peritoneum above, is in contact with the rectum.
The ductusdeferens, also known as the vas deferens, is a paired duct, or tube, that is part of the male reproductive system in mammals.
Thick-walled, the ductusdeferens is composed of several layers of tissue.
As the ductusdeferens rises upwards from the epididymis towards the bladder, it also comes to be surrounded by nerve fibers, arteries, and veins, and the complex structure further encased in connective tissue is referred to as the spermatic cord.
Feeds |
Contact