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Ventral (A) and dorsal (B) venous drainage of the brainstem. Ant., anterior; Bas., basilar; Br., bridging; Cer., cerebellar; Com., communicating; Inf., inferior; Lat., lateral; Med., median, medullary; Mes., mesencephalic; Ped., peduncle; Pon., pontine; Post., posterior; Sul., sulcus; Sup., superior; Trans., transverse; Trig., trigeminal; V., vein.
