at the moment of ejaculation, the thick layers of smooth muscle in the ductus deferins create strong peristaltic waves that rapidly squeeze the sperm forward along the tract and into the urethra. (Human Anatomy and Physiology,8th edition, Marieb & Hoehn)
Sperm cells move along the ductus deferens through a combination of flagellar movement and muscular contractions of the ductus deferens itself. This coordinated movement propels the sperm towards their destination for ejaculation.
It propels sperm into the urethra during ejaculation. "Ductus Deferens" is also called as "Vas Deferens"
They aren't stored after they leave the epididymis, they are ejaculated.
Vas deferens
The epididymis connects the testes with the ductus deferens. Sperm mature and are stored in the epididymis before moving into the ductus deferens for ejaculation.
vas deferens or ductus deferens
Epididymis > ductus deferens > ejaculatory duct > urethra.
There is no ampulla of ductus deferens in pigs
The epididymus leaves the testies and connects ot the Vas Deferens (also called the Ductus Deferens) which attaches to the ejaculatory duct. The ejaculatory duct is a short segment that connects to the urethra.
The vas deferens (plural: vasa deferentia), also called ductus deferens, (Latin: "carrying-away vessel"; plural: ductus deferentes), is part of the male anatomy of many vertebrates ; they transport sperm from the epididymis in anticipation of ejaculation.
"The vas deferens (plural: vasa deferentia), also called ductus deferens..."Ejected through the Urethra from the penis.
Vas deferens