 The prostate is a male genital gland, about the size of a chestnut. It varies in size according to a man's age. Located under the bladder, in front of rectum, the prostate gland forms a type of sheath around the upper part of the urethra (the canal that carries off the urine from the bladder). Contrary to generally accepted ideas, the prostate is not directly involved in sexual intercourse and it does not affect the mechanisms of libido and erection. However, the prostate is involved in the ejaculation mechanism, since it secretes most of the seminal fluid which is used to transport and activate spermatozoids. |