GRAY MATTER OF THE CORD. 



345 



Third lumbar segment 



Posterior column 

 Entry zone 

 Marginal tract 

 (Lissaueri) 



Oval tract (Flechsigi) 



Gelatinous substance* 



Triangular tract 

 (Helwigi) 



Medial longitudinal bundle 



Central cells 



Ventro-lateral cells 

 Ventro-medial cells 



Third sacral segment 



Septomarginal tract Bandalette of hoche 



Postero-lateral descending tr. 



Cornu-commissural tr 

 Lateral pyramidal tr. 



Antero-lat. fas- 

 ciculus proprius 



Descending ant. 



cerebello-spinal tract 



Anterior pyramidal tract 



Gelatinous substance 



Dorso - latera 

 cells 



Central cells 



Ventrol lateral cells 

 Anterior longitudinal bundle 



Fig. 103. Tracts of fibers and columns of cells in the lumbar and sacral regions 

 of the cord. Diagrammatic. (In part after Bruce and Cunningham.} 



