Answer: Prostrate gland
Explanation:
Prostrate gland is the part of male reproductive system. It is present at the base of the bladder. It produce the fluid which comes as seminal vesicles through ejaculatory ducts finally to the urethra. The urethra is a tube which runs through prostrate gland. In case of cancer, the imflammation of prostrate takes place. As a result of this urethra tube becomes narrow and restricts the flow of urine.