PROPERTIES OF THE NERVE CELL. 



133 



motor type of cell, and this view is, in a measure, borne out by 

 subsequent investigation. The distinctly motor cells of the cen- 

 tral nervous system such, for instance, as the pyramidal cells 

 of the cerebral cortex, the anterior horn cells of the spinal cord, 

 the Purkinje cells of the cere- 

 bellum all belong to this 

 type. But within the nerve 

 axis most of the conduction 

 from neuron to neuron, 

 along sensory as well as 

 motor paths, is made with * 

 the aid of such structures, 

 the dendrites being the re- 

 ceptive or sensory organ and ^ 

 the axon the motor appara-* A 

 tus. 



The Golgi cells of the 

 second type (Fig. 61) are rel- 

 atively less numerous and 

 important. They are char- 



Fig. 61. Golgi cell (second type). Fig. 62. Normal anterior horn cell 



The axon, a, divides into a number of (Warringtori) , showing the Nissl granules in tht? 



fine branches. (From Obersteiner, after cell and dendrites: a, The axon. 

 Andriezen.) 



acterized by the fact that the axon process instead of forming a 

 nerve fiber splits into a great number of branches within the 

 gray matter. Assuming that in such cells the distinction between 

 the axon and the dendrites is well made and that as in the other 

 type the dendrites form the receiving and the axon the discharg- 

 ing apparatus, these cells would seem to have a distributive 

 function. The impulse that they receive may be transmitted to 



