The cerebellum Location: in the posterior cranial fossa; posterior to the medulla and pons; inferior to the occipital lobes of cerebrum; separated it from cerebrum with transverse fissure and the tentorium cerebelli.

Vermis: nodule, uvula of vermis, pyramid of vermis The external feature Vermis: nodule, uvula of vermis, pyramid of vermis Cerebellar hemisphere Folia Fissures: Primary fissure Horizontal fissure Posterolateral fissure Flocculus, Tonsil Cerebellar peduncles 4th. Ventricle

The lobes of cerebellum: 3 lobes anterior lobe (oldest part) : vestibulocerebellum posterior lobe (phylogeneticaly is older part to appear): spinocerebellum flocculonudular lobe (new part in phylogenetic) : cerebrocerebellum Fissures: Primary fissure Horizontal fissure Posterolateral fissure Flocculus, Tonsil Cerebellar peduncles 4th. Ventricle

— gray matter : cerebellar cortex central nuclei The Internal structures molecular stratum — gray matter : cerebellar cortex central nuclei Purkinje’s stratum granular stratum e 颗 粒 细胞层 白质

central nuclei : Dentatum nuclei Emboliform nn. Globose nn. Internal structures — gray matter : cerebellar cortex central nuclei : Dentatum nuclei Emboliform nn. Globose nn. Fastigial nn.

— White matter : intrinsic fibers: projection fibers : The Internal structures — White matter : intrinsic fibers: projection fibers :

projection fibers : 3 cerebellar peduncles superior peduncle Internal structures — White matter : intrinsic fibers: projection fibers : 3 cerebellar peduncles superior peduncle middle peduncle inferior peduncle

inferior cerebellar peduncle: restiform body afferent fibers--- inferior olivary complex (olivocerebellar tract) posterior spinocerebellar tract reticular formation vestibular nuclei and nerve efferent fibers--- from flocculonodular lobe , fastigial nuclei; to the vestibular nn. , reticular formation , pons. middle cerebellar peduncle: brachium pontis afferent fibers--- pontocerebellar fibers

The function of cerebellum superior cerebellar peduncle: brachium conjunctivum efferent fibers--- from the globose, emboliform and dentate nuclei (dentatorubral tract, dentatothalamic tract) afferent fibers--- anterior spinocerebellar tract The function of cerebellum Maintain the equilibrium of the body. Keep good muscular tone Coordinate the movements of the m..