Medical Term:

vertebral venous system

 

Definition: any of four interconnected venous networks surrounding the vertebral column; anterior external vertebral venous plexus [TA] (plexus vertebralis externus anterior [TA]), the small system around the vertebral bodies; posterior external vertebral venous plexus [TA] (plexus vertebralis internus anterior [TA]), the extensive system around the vertebral processes; anterior internal vertebral venous plexus [TA] (plexus vertebralis internus posterior [TA]), the system running the length of the vertebral canal anterior to the dura; posterior internal vertebral venous plexus, the system running the length of the vertebral canal posterior to the dura; the latter two constitute the epidural venous plexus.

Synonym(s): plexus venosus vertebralisTA, Batson plexus, vertebral venous plexus

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