Seminal vesicle

2 small organs in a man's body. The seminal vesicles are next to the prostateProstateOrgan that surrounds a man's urethra. When a man has an orgasm, the…Read more. The seminal vesicles and the prostate produce the fluid in a man's semenSemenThick white fluid that comes out of a man's penis when he ejaculates.…Read more.