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What Is the Prostate?

 

The prostate is a small gland in men that is part of the reproductive system. It's about the shape and size of a walnut. The prostate rests below the bladder and in front of the rectum. It surrounds part of the urethra, the tube that carries urine from the bladder. The prostate helps make semen, which carries sperm from the testicles when a man ejaculates.