Prostate Cancer


The prostate and its functions

The prostate is an organ in the male reproductive system. It is a spherical gland, the size of a walnut, located below the bladder and in front of the rectum. The prostate surrounds the urethra, which is the tube that transports urine and semen through the penis.

The primary function of the prostate is the production of a whitish fluid for semen. The prostate also plays a part in controlling the flow of urine. In addition, the prostate produces a protein called prostate specific antigen (PSA).