This agrees with the conclusions at which Bouin and Ancel had arrived by ligaturing the vasa deferentia of male animals.
The paired oviducts and vasa deferentia are, as we have seen, mesodermal in origin.
vas deferens vas def·er·ens (vās' děf'ər-ənz, -ə-rěnz')
n. pl. vasa def·er·en·ti·a (děf'ə-rěn'shē-ə)
The main secretory duct of the testicle, through which semen is carried from the epididymis to the prostatic urethra, where it ends as the ejaculatory duct. Also called deferent duct, spermatic duct, spermiduct.