Lateral Perspective of the Right Brainstem and Cerebellum. At the top of the image, the middle cerebellar peduncle (MCP) connects the basis pons with the cerebellar white matter.  Note the attachment of the trigeminal nerve at the approximate transition between the basis pons and MCP, and the attachment of the abducens nerve on the ventral surface of the pontomedullary junction, in line with the preolivary sulcus.  The inferior cerebellar peduncle is located inferiomedially and masked from view in this lateral perspective. The foramen of Luschka is clearly visible, with a conspicuous tuft of choroid plexus extending through it, just inferior to the flocculus. Note the close association between the flocculus and the vestibulocochlear nerve complex. (Image courtesy of AL Rhoton, Jr.)