Fellowship in Sexology and Psychosexual Counseling. For More Info WhatsApp- 9604715783. Testis is composed of coiled seminiferous tubules where the sperms are formed. Sperms then empty into Epididymis, a 20 feet long coiled tube. Epididymis leads to vas deferens which enlarges into Ampulla immediately before it enters into the Prostate. Seminal vesicle, located on each side of the prostate empties in the prostatic end of ampulla and the contents of the ampulla and the seminal vesicle pass into Ejaculatory duct leading through the body of prostate gland to empty into the Internal Urethra.