According to the sources, the male sex accessory ducts follow a specific anatomical sequence for sperm transport . The seminiferous tubules of the testis open into the vasa efferentia through a network called the rete testis . The vasa efferentia then leave the testis and open into the epididymis, which subsequently leads to the vas deferens . Consequently, the vasa efferentia are the specific ductules that carry sperm from the rete testis towards the next segments of the duct system, ultimately reaching the vas deferens .