362 NORMAL HISTOLOGY AND ORGANOGRAPHY. 



2. In non-striated and in heart muscle the nerve 

 termination is more simple. The muscle is supplied 

 with neurons from the sympathetic system, most of 

 which are of the non-medullated variety. These 

 fibers branch repeatedly to form an extensive 



Nerve-end 

 brush. 



So-called gran- 

 ular sole. 



Muscle fiber. 



Fig. 253. Motor endings in striated voluntary muscles. From 

 Pseudopus Pallasii. As a consequence of the treatment the arborescence 

 is shrunken and interrupted in its continuity. The end plate is in con- 

 nection with two nerve branches (Bohm and Davidoff). 



primary plexus surrounding the muscle bundles. 

 From this plexus non-medullated fibers, that is, 

 just the.as^s cylinders, penetrate the heart muscle, 

 or the involuntary muscle, where they anastomose 

 to form a delicate secondary plexus, from which lat- 

 eral short twigs pass to end in minute dilatations or 

 granules upon the muscle cells. 



