Picture of Prostate
The prostate gland is part of the male reproductive system. It is the size of a walnut and anatomically sits in front of the rectum and between the bladder and the penis. The prostate surrounds the urethra. Sperm are generated in the testes. Tubes called vasa deferens are conduits for sperm that move from the testes to the seminal vesicles. Seminal vesicles secrete fluid that is a component of semen. The prostate contains sperm that is released during ejaculation.
Text Reference: "Anatomy of the Prostate." National Cancer Institute.