342 



THE NERVOUS SYSTEM 



neurons whose dendrites enter into their formation, namely, unicellular (Fig. 

 25 1 , A , a) , bicellular , triceUular (Fig. 25 1 , B) , and multicellular glomeruli. Short 

 intracapsular dendrites with swollen ends are sometimes present in the sym- 

 pathetic ganglia of mammals (Fig. 252, A}. 



Fig. 252. Sympathetic ganglion cells showing various types of dendrites. Redrawn from 

 Michailow. Methylene-blue stain. A, From superior mesenteric ganglion, horse; B, from celiac 

 ganglion, horse; C, from stellate ganglion, horse; D, from superior cervical ganglion, dog; E, celiac 

 ganglion, horse; F, superior cervical ganglion, dog. 



Extracapsular dentrites pierce the capsule, run for longer or shorter dis- 

 tances among the cells, and help to form an intercellular plexus of dendritic and 

 axonic ramifications (Fig. 251, -4). These dendrites may end in a variety of 

 ways. Some of these types of endings may be enumerated as follows: (1) 

 brush-like endings (Fig. 252, A); (2) plate-like or bulbous terminals applied 



