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List of vessels classified by flow direction and drainage type
Venous Type I (Primary)Venous Type II (Paraspinal)Venous Type III (Superficial)Arteries
Internal jugular veinsDeep cervical veinsExternal jugular veinsVertebral arteries
Vertebral veinsAnterior jugular veinsInternal carotid arteries
Epidural veinsPosterior external jugular veins
Anterior vertebral venous plexus veins
Posterior vertebral venous plexus veins