vas efferens

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vas ef·fer·ens

 (ĕf′ər-ənz, -ə-rĕnz′)
n. pl. vasa ef·fer·en·ti·a (ĕf′ə-rĕn′shē-ə)
Any of a number of small ducts that carry semen from the testis to the epididymis.

[New Latin vās efferēns : vās, duct + Latin efferēns, present participle of efferre, to carry out.]
References in periodicals archive ?
A tiny arterial branch supplies blood to each node, there is a small vein as well as an efferent lymphatic leaving the hilum (2).
3) Most of these are congenital, due to insufficiency or atresia of the efferent lymphatics or lack of communication between lymphatics and venous channels.