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vas def·er·ens

npl  vasa def*er*en*tia   :  a sperm-carrying duct esp. of a higher vertebrate that in humans is a small but thick-walled tube about two feet (0.6 meter) long formed by the union of the vasa efferentia, is greatly convoluted in its proximal portion, begins at and is continuous with the tail of the epididymis, runs in the spermatic cord through the inguinal canal, and descends into the pelvis where it joins the duct of the seminal vesicle to form the ejaculatory duct - called also ductus deferens , spermatic duct  .
 
   

 
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Monroe County Hospital (Forsyth, Georgia - Monroe County)