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Your Guide to Prostate Cancer

What – and Where – Is the Prostate?

What – and Where – Is the Prostate?

The prostate is a walnut-sized gland that is part of the male reproductive system. It can be found in front of the rectum and underneath the bladder. The prostate surrounds the urethra, the small tube that carries urine and semen out of the body, and is responsible for producing seminal fluid (the white fluid that contains the sperm after ejaculation).

By Emily Lavin. Published September 20, 2011. Emily is a health writer and editor living in San Francisco.