 Hi, I'm Dr. Amrit Rao. I'm a urologist and a robotic surgeon working at Manipal Hospital, Bangalore. Prostate gland is present only in men. It is a walnut-sized shaped gland that is situated below the bladder and it serves two purposes in men. One, it contributes to the semen and more importantly to the urine tube known as the urethra passes from the bladder through the prostate gland to the exterior. So it carries urine as well.