514 



MANUAL OP PHYSIOLOGY. 



entire surface so as to meet with general mechanical and thermic 

 changes, or they are further specialized for the reception of lumi- 

 nous, sonorous, odorous or gustatory impulses. In the latter cases 



FIG. 205. 



Tactile nerve endings, composed of small capsules, in which the black axis cylinder of 

 the nerve (a) and (ra) meets with many protoplasmic units. 



the special terminals are collected into one part, and usually form 

 complex organs, which will be described presently in the chapters 



FIG. 205*. 



Multipolar cells from the anterior gray column of the spinal cord of the dog-fish (a) 

 lying in a texture of fibrils; (6) prolongation from cells; (c) nerve fibres cut across. 

 (Cadiat.) 



on the special senses. Another great set of terminals are placed 

 in the deeper textures, when they act as local distributing agents; 

 such as the nerve plates on skeletal muscles, and the ganglionic 



