How Does a Vasectomy Work?


Quick Answer

Vasectomies prevent pregnancy by blocking ducts that allow sperm to mix with semen, notes WebMD. Without sperm, fertilization of female ova is impossible. The ducts that allow sperm and semen to mix are known as vans deferens. They connect sperm-producing testicles with the urethra.

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Full Answer

There is a vans deferens duct for each testicle, according to Wikipedia. To achieve sterility, physicians cut, clamp or seal both vans deferens. Testicles continue functioning normally, producing sperm and hormones such as testosterone. However, all the sperm produced is absorbed by the body as it is no longer ejected. The volume of penal ejaculate remains as it was before the procedure. Recovery is generally quick, and subjects usually resume normal sexual activity after a week.

Alternative birth control methods are still required until sperm count falls to zero, warns WebMD. The process takes 10 to 20 ejaculations. To verify the sperm count, tests are conducted at the third and fourth month after the procedure. A vasectomy is generally considered a permanent birth control method. However, it can be reversed but at great cost and difficulty, notes Wikipedia. In addition, subjects cannot regain their pre-vasectomy sperm count. For that reason, the procedure should only be considered by those planning not to have more children, warns WebMD.

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