Human Anatomy, Part 1 - K. A. Dyubenko, A. K. Kolomiytsev, Yu. B. Chaykovsky 2002

Special Part
Reproductive Systems, systemata genitalia - Male Reproductive System, systema masculinum
Internal Male Genital Organs, organa genitalia masculina interna - Ductus Deferens

The vas deferens, Ductus deferens, is a paired organ that is a continuation of the epididymal duct. It has four distinct parts: the scrotal part, pars scrotalis; the funicular part, pars funicularis; the inguinal part, pars inguinalis; and the pelvic part, pars pelvica. It is a thin tube with a diameter of about 2.5 mm and a length of 40–45 cm, running within the Spermatic Cord, funiculus spermaticus, as it ascends in the Scrotum toward the superficial inguinal ring. After passing through the Inguinal Canal, it courses posteriorly and inferiorly toward the Cytology/practical/108.html">Fundus of the Urinary Bladder and the Prostate Gland. Near the prostate, the duct thickens and forms an expansion known as the ampulla of the vas deferens, ampulla ductus deferentis. The wall of the duct consists of three layers: mucosal, muscular, and adventitial.



Last update: 08/08/2026

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