86 



LABORATORY OUTLINE OF NEUROLOGY 



BN A 



Ala lobuli centralis 



Lobulus centralis 



Culmen monticuli 



Pars anterior lobuli 



quadrangularis 



Pars posterior lobuli 



quadrangularis 



Declive monticuli 



Lobulus semilunaris 

 superior 



BOLK 

 Lobus anterior 



Sulcus primarius 

 Lobulus simplex 

 S. pel. 

 Lobulus ansiformis 



FIG. 13. The human cerebellum from above. 



Lobus anterior 



Cerebellar peduncles 

 Flocculus 



Sulcus 



uvulo-nodularis 

 Tonsilla 



Fissura secunda 



Lobulus 

 ansiformis 



Lobulus centralis 



Ala lobuli centralis 



Brachium pontis 



Flocculus 



Brachium 



conjunctivum 



Nodulus 



Uvula 



Tonsilla 



Lobulus biventer 

 Pyramis 



Tuber 



Lob'l. semilun. inf. 

 Sulcus horizontalis 

 Lobulus semilu- 

 naris superior 



FIG. 14. The human cerebellum from below. 



In these two diagrams the principal subdivisions of the cerebellum are 

 indicated and the B N A names are designated at the left. At the right 

 are the names given by Bolk to these structures and one fissure not named 

 by Bolk, the sulcus postclivalis (S.pcL), as named by Symington in Quain's 

 Anatomy. The sulcus primarius of Bolk and Kuithan is the same as the 

 furcal sulcus of Stroud, the fissura prima of Elliot Smith, and the sulcus 

 preclivalis of Symington. The lobulus simplex of Bolk extends across the 

 median plane and includes the declive of the B N A in the vermis. The 

 tonsilla is Elliot Smith's lobulus paramedianus. 



The functional localization within the cerebellar cortex as determined 

 by Bolk, Rynberk, and others is also indicated on the figures. Head move- 

 ments are controlled in the lobus anterior of Bolk, i. e., all parts in front of 

 the sulcus primarius. The lobus simplex controls neck movements. Arm 

 and leg movements are controlled in the lobus ansiformis and trunk move- 

 ments in the inferior vermis. 



of the larger text-books of anatomy. Recent investigations of 

 the comparative anatomy, comparative embryology, experi- 

 mental physiology, and pathology of the cerebellum have 



