What is the main function of the prostate gland?

Updated: Jan 15, 2019
  • Author: Levi A Deters, MD; Chief Editor: Edward David Kim, MD, FACS  more...
  • Print
Answer

The main function of the prostate gland is to secrete an alkaline fluid that comprises approximately 70% of the seminal volume. The secretions produce lubrication and nutrition for the sperm. The alkaline fluid in the ejaculate results in liquefaction of the seminal plug and helps to neutralize the acidic vaginal environment.

The prostatic urethra is a conduit for semen and prevents retrograde ejaculation (ie, ejaculation resulting in semen being forced backwards into the bladder) by closing off the bladder neck during sexual climax. Ejaculation involves a coordinated contraction of many different components, including the smooth muscles of the seminal vesicles, vasa deferentia, ejaculatory ducts, and the ischiocavernosus and bulbocavernosus muscles.


Did this answer your question?
Additional feedback? (Optional)
Thank you for your feedback!