Home > Cancer > What Is The Prostate Get the Flash Player to see this player. Rate: (Click the stars to rate) Published on Oct 23, 2008 by HNagler, Views: 4908 The Prostate. Dr. Harris Nagler, the Chair of Urology at Beth Israel Medical Center, explains what the prostate is, and what the function of the prostate is. Prostate. Prostate cancer.