THE PERIPHERAL NERVE-ENDINGS. 



several nerve-fibres instead 

 of a single one may supply 

 the end-plate. 



The nerve-endings in 

 the voluntary muscle of 

 amphibians and bony fishes 

 differ from the foregoing in 

 the absence of the granular 

 protoplasmic disk, and in 

 the more diffuse disposi- 

 tion of the terminal nerve- 

 fibres. The axis-cylinders, 

 in these cases, branch into 

 fibrillae which extend for 

 some distance parallel to 

 the axis of the muscle- 

 fibre and end in slight 

 bulbous expansions ; gran- 

 ular pyriform nuclei also 

 occur along the course of 

 these fibrillae. 



The muscle-spindles 

 described by Kuhne are 

 considered as special 

 sensory nerve - endings. 

 They contain muscle- 

 fibres and the terminal 

 arborizations of the nerve 

 surrounded by an en- 

 velope of connective tis- 

 sue. 



Tendon. In addition 

 to the sensory end- 

 plates of tendon, studied 

 by Kolliker, Rollett, 

 Sachs, Golgi, and others, 

 which consist of an intri- 

 cate net-work of pale 

 non - medullated fibres, 

 Golgi has described pe- 

 culiar nerve-endings in 

 tendon to be found in the 

 immediate vicinity of the 

 union with the muscle, 



FIG. 112. 



**i.<^ 



$$ 



T^.% 



Ear) of the ajjs-cyfinder; X, the 

 of which is separated at *- A^, the 

 fibres; R, node of Ranrier. 



