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A TEXTBOOK OF PHYSIOLOGY 



SECTION II 

 THE CEREBELLUM 



The'Structure of the Cerebellum. The little brain, or cerebellum, 

 consists of a middle lobe, or vermis, and two lateral hemispheres. 

 Its surface is thrown into many folds, which in section give it a tree- 

 like appearance the arbor vitae. The organ consists of a grey cortex, 

 and white matter within. In the latter, near the middle line, are 





Fio. 430. SECTION* OF CEREBELLAU CORTEX. (San key, from 

 " Quain's Anatomy.") 



a, Pia mater; &, molecular layer; c, cells of Purkinjc; d, granule layer; e, white centiv. 



ganglia of grey matter the roof nuclei and in the middle of each 

 lateral lobe the dentate nuclei. It is from these nuclei that the axons 

 which leave the cerebellum arise 



