Multiple choice The vas deferens is important for which of the following functions of spermatogenesis? It consumes the unneeded portions of the spermatozoa Sperm transit Maintaining the blood–testis barrier Testosterone production Sperm storage Reveal answer Fill a bubble to check yourself B Correct answer Explanation Both the epididymis and the vas deferens are made up of ducts which have muscular components. These muscular parts aid in peristalsis, which helps move spermatozoa along the ducts.