abnormal cerebellum vermis morphology MA:0000202 MP:0000864 MPheno.ontology abnormal cerebellar vermis morphology abnormal spinocerebellum morphology vermis part abnormal vermis morphology any structural anomaly of the narrow medial zone between the two hemispheres of the cerebellum that is delimited by two longitudinal furrows; it may be continuous with the cerebellar hemispheres in some areas of the cerebellum, e.g., dorsally, or separated by deeper fissues in others (e.g., ventrally); it receives inputs from the spinocerebellar tracts which carry to the vermis information on the position and balance of the torso, and it sends projections to the fastigial nucleus of the cerebellum, which then sends output to the vestibular nuclei cerebellum vermis dysplasia abnormal cerebellar cortex morphology