Medical Definition of cerebellar peduncle
: any of three large bands of nerve fibers that join each hemisphere of the cerebellum with the parts of the brain below and in front:a: one connecting the cerebellum with the midbrain—called also , , b: one connecting the cerebellum with the pons—called also , , , c: one that connects the cerebellum with the medulla oblongata and the spinal cord—called also , ,
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