STRUCTURE OF THE SPINAL CORD 



,'557 



CERVICAL. ; 

 i 



DORSAL. 



LUMBAR. 



ANTERIOR 

 ROOT-BUNDLES 



FIG. 155. Sections of human spinal cord from the lower cervical, mid- 

 dorsal, and mid-lumbar regions, showing the principal groups of nerve- 

 cells, and on the right side of each section the conducting tracts as 

 they occur in the several regions (magnified about 7 diameters). 

 (E. A. SCHAFER.) 

 a, b, c, groups of cells of the anterior horn ; d, cells of the lateral horn ; 



e, middle group of cells ; /, cells of Clarke's column ; g, cells of posterior 



horn ; cc, central canal ; ac, anterior commissure. 



