390 



PHYSIOLOGY 



Optic 

 TheJ&muS 



Internal } 

 CApsufej-- 



__-:Red Nucleus 

 Pyramidal Tract 



-ClaustVum 



-Dentate Nucleus 



nor 



Vestibule Spinal 



Crossed Pyramidal Tract 



Direct Pyramidal Tract 



D65C6MDING M6RV/E 

 TRACTS. 



FIG. 199. Schema of course taken by chief descending tracts of brain stem. (GORDON 

 HOLMES). The tract in red, to the right of the rubro-spinal tract, includes the posterior 

 longitudinal bundle, together with the fibres of the thalamo-spinal and tecto-spinal 

 tracts. 



