FIG. 25. Diagram of a nervous cell (g) in relation to a cross-striate (voluntary) 

 muscle fibre (mf.). B and C show enlargements of a small portion of a fibre (/, fibril) 

 of muscle; and D an enlargement of a nerve fibre, ./. a, the axis of the nerve fibre; 

 g, ganglion, or the central part of a nerve cell; ax, axon, or principal outgrowth of the 

 nerve cell; d, dendron, or branched out-growths of the nerve cell; n.m., the delicate 

 plate of material where nerve and muscle unite. 



Questions on the Figure. Compare the striate muscle fibre at 

 all points with the unstriate (Fig. 8; 13). How does the complex 

 nerve cell differ from a typical cell? What are believed to be the 

 special uses of the various parts of the nerve cell? Why is it neces- 

 sary that nerve and muscle cells should be connected? What is a 

 neuron? 



