The prostate is a gland of the male reproductive system. The prostate produces some of the fluid for semen, which transports sperm during the male orgasm.
Normally, the prostate is quite small—it is nearly the same size and shape as a chestnut. It is located in front of the rectum, just below the bladder, and wraps around the urethra, the tube that carries urine from the bladder out through the tip of the penis. The prostate is made up of approximately 30% muscular tissue, and the rest is glandular tissue.
I pulled this up on Google
Sheila