Funicular part of ductus deferens

Commencing at the lower part of the tail of the epididymis, the ductus deferens is at first very tortuous, but gradually becoming less twisted it ascends along the posterior border of the testis and medial side of the epididymis (Scrotal part of the ductus deferens), and, as a constituent of the spermatic cord (Funicular part of the ductus deferens), traverses the inguinal canal (Inguinal part of the ductus deferens) to the abdominal inguinal ring. Here it separates from the other structures of the cord, curves around the lateral side of the inferior epigastric artery, and ascends for about 2.5 cm. in front of the external iliac artery.