What is part of the male reproductive system?

Testicle, Vas, SV. The male reproductive system includes the testicles, which empty into the epidydimus, into the vas deferens, which joins with the seminal vesicles to form the ampulla which empties into the prostate on each side. The majority of the seminal fluid is from the prostate and seminal vesicles, only a fraction is composed of spermatozoa.