Chap, xv.] PERIPHERAL NERVE-ENDINGS. 



a number of oblong nuclei (Fig. 78). The whole struc- 

 ture is called the nerve endplate. When the muscular 

 fibre contracts this endplate naturally assumes the 

 shape of a prominence Doyere's nerve-hillock. Each 

 muscular fibre has at least one nerve endplate, but 

 occasionally has several in near proximity. An 

 endplate is generally supplied by one, sometimes, 

 however, by two, nerve-fibres. The contraction 

 wave generally starts from the endplate. In 

 Batrachia the nerve-fibre does not, as a rule, termi- 

 nate in the shape of a granular endplate, but 

 having penetrated the sarcolemma ramifies into 

 several axis cylinders, each of which again branches ; 

 all branches have a more or less longitudinal 

 direction, and are provided, either terminally or in 





Fig. 79. Termination of Medullated Nerve-fibres in Tendon, near the 

 Insertion of the Striped Muscular Fibres. 



The nerve-fibres terminate in peculiar reticulated endplates of primitive 

 librilla?. (Golgi.) 



their course, with oblong nuclei. Arndt has 

 shown that both kinds of terminations occur in 

 Batrachia. These two sorts of nerve endings lie 



