Deferens
Deferens (pronunciation: /dɪˈfɛrənz/)
The deferens, also known as the vas deferens, is a vital part of the male reproductive system in many mammals, including humans.
Etymology
The term "deferens" is derived from the Latin word "deferens", which means "carrying down". The full term "vas deferens" translates to "carrying vessel".
Anatomy
The deferens is a thin, muscular tube that transports sperm from the epididymis, where sperm mature, to the urethra, the tube through which both urine and sperm exit the body. There are two vasa deferentia in the male body, each connected to a testicle.
Function
The primary function of the deferens is to transport and store sperm. During ejaculation, the muscular walls of the deferens contract to propel the sperm forward. This is known as peristalsis. The sperm are mixed with seminal fluid, produced by the seminal vesicles, to create semen.
Related Terms
- Epididymis: A long, coiled tube that rests on the backside of each testicle. It transports and stores sperm cells that are produced in the testes.
- Urethra: A tube that carries urine from the bladder to the outside of the body. In males, it has the additional function of ejaculating semen.
- Peristalsis: A series of wave-like muscle contractions that moves food to different processing stations in the digestive tract.
- Seminal vesicles: Two small glands that secrete a large portion of the fluid that ultimately becomes semen.
See Also
External links
- Medical encyclopedia article on Deferens
- Wikipedia's article - Deferens
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