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Cerebellum Laboratory LABORATORY OBJECTIVES 1. To know the origin, course, and termination of cerebellar afferent (spinocerebellar, vestibulocerebellar, pontocerebellar, olivocerebellar) and efferent (cerebellorubral and cerebellothalamic) pathways. 2. To identify in the Haines’ Neuroanatomy Atlas the location of deep cerebellar nuclei, and other nuclei and tracts associated with cerebellar afferents and efferents. SUMMARY LIST OF STRUCTURES 1. 2. 3. 4. 5. 6. 7. Cerebellar vermis/cerebellar hemispheres Anterior, posterior, and flocculonodular lobes of the cerebellum Primary fissure/ pre-nodular (posterolateral) fissure- separate the three lobes Nucleus dorsalis of Clarke/ dorsal spinocerebellar tract Ventral spinocerebellar tract (enters cerebellum thru superior cerebellar peduncle) Accessory (lateral) cuneate nucleus and cuneocerebellar tract (in inf. cerebellar peduncle) Inferior cerebellar peduncle (restiform body, juxtarestiform body)- contains primarily afferents (spinocerebellars, vestibulocerebellars, olivocerebellars) 8. Inferior olivary nucleus 9. Olivocerebellar tract (climbing fibers) 10. Vestibular complex/ flocculonodular lobe/ juxtarestiform body (vestibulocerebellars and fastigiovestibulars) 11. Deep cerebellar nuclei (fastigial, globose, emboliform, dentate) 12. Basilar pontine nuclei and pontocerebellar fbers 13. Middle cerebellar peduncle (brachium pontis)- contains pontocerebellar fibers 14. Superior cerebellar peduncle (brachium conjunctivum)- contains primarily cerebellar efferents from dentate, globose and emboliform nuclei; but also afferents: vent. spinocerebellars) 15. Decussation of superior cerebellar peduncle (brachium conjunctivum) 16. Red nucleus (input from cerebellum and projects to contralateral spinal cord) 17. Ventrolateral nucleus of the thalamus 18. Central tegmental tract (contains rubro-olivary fibers and crossed desc. limb of the superior cerebellar peduncle, containing cerebello- (dentato-)-olivary fibers) See also Haines 7th Edition, pp. 22, 30-32, 36-37, 81-83, 222-233