Prostate is an important gland in the male reproductive system. When healthy and in men younger than 50, it is usually the size of a walnut and weighs about 0.75 ounces. The prostate is located in the abdomen, in front of the rectum and between the penis and the bladder. The urethra is the same tube that carries sperm from the testicles and urine from the bladder through the penis and also passes through the prostate. This gland plays a role in male fertility and produces and secretes prostate fluid, which is a part of semen. During ejaculation, sperm move from the testicles through a series...