The vas deferens -LRB- plural : vasa deferentia -RRB- , also called ductus deferens , -LRB- Latin : `` carrying-away vessel '' -RRB- , is part of the male anatomy of some species ; they transport sperm from the epididymis in anticipation of ejaculation .

The vas deferens is also called the ductus deferens , -LRB- Latin : `` carrying-away vessel '' -RRB- .
