176 



INTRODUCTION TO NEUROLOGY 



to cerebellum 



(brochium conjuncTivuml 



7, longitudinal medial 

 _i_^-^ fasciculus 



^ r\\ 



dorsal spino- 

 cerebeliar tract, 7 



nucleus of fast gracilis 

 nucleus of fosccuneotus 



6,spino-olivary trod 

 5,ventral spino- cerebeltar Trocl 



Fie. 83. Diagram of the chief proprioceptive conduction pathways con- 

 tained within the spinal cord and brain stem. The mesencephalic root of 

 the trigeminal nerve (see p. 180 and Figs. 71 and 77) is omitted and not all 

 of the cerebellar connections are indicated. The connection to the cere- 

 bellum from the nuclei of the fasciculi gracilis and cuneatus (neuron 14) is 

 controverted, but it is well established that similar connections are effected 

 immediately below this level from the dorsal funiculus of the cord. The 

 figure illustrates cross-sections of the central nervous system in the lower 

 cervical region of the spinal cord, at the level where the cord passes over 



