Lateral Perspective of Brainstem and Cerebellum with Venous Anatomy. The location of the foramen of Luschka is indicated by the tuft of choroid plexus extended through it, just inferior to the flocculus. Note the close association between the flocculus and the vestibulocochlear nerve complex. The vein of the cerebellopontine fissure can be observed coursing posteriorly to the primary fissure along the cerebellar cortex. The anterior and posterior lobes of the cerebellum are separated by the primary fissure (not clearly visible). (Image courtesy of AL Rhoton, Jr.)