Chap. XVI.] 



THE SPINAL CORD. 



139 



are much more numerous in the anterior horn than in 

 the posterior, where they are comparatively scarce. 



In the former they are all stellate or multipolar, 

 and form definite groups : (a) an anterior group. 



Fig. 86. An Isolated Ganglion Cell of the Anterior Horn of the 



Hiiman Cord. 



, Axis cylinder process ; 6, pigment. The branched processes of the ganglion 

 cfll break up into the fine nerve network shown in the upper part of the 

 figure. (Gerlach, in Strieker's " Manual of Histology.") 



(b) a median or inner group, and (c) a lateral group. 

 The cells of the lateral group are the largest, those of 

 the inner or median group are the smallest of the 

 three. The lateral group of ganglion cells extends in 

 the cervical region more or less into the white matter 

 of the lateral column. 



