The prostate gland is an organ that surrounds the urinary urethra in men. It secretes fluid which mixes with sperm to make semen. The urethra carries urine from the bladder, through the prostate gland to the penis.
Reviewed last on: 9/7/2008
Louis S. Liou, MD, PhD, Assistant Professor of Urology, Department of Surgery, Boston University School of Medicine. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.