How is the role of seminal vesicles and prostate gland?

Seminal vesicles and prostate gland are part of the male reproductive system. They both add their secretion to vas deferens which carries sperms from the testes,thus making the transport of sperms much easier. This secreted fluid provides nutrition to sperms in the form of fructose, calcium and some enzymes and also protects the sperms from the acids present in the urethra.