PERIPHERAL NERVE TERMINATIONS. 



363 



SENSORY NERVE ENDINGS. 

 (Telodendria of Dendrites.) 



The sensory nerve terminations are essentially 

 the terminals of dendrites as distinguished from the 

 motor plates which are the terminals of axones. 

 The cell bodies of these sensory neurons are found 

 in the spinal and cranial ganglia, often at a consid- 

 erable distance from the sensory termination. In 



Fig. 254. -Motor nerve ending on 

 heart muscle cells of cat; methylene- 

 blue stain (Huber, De Witt). 



Fig. 255. Motor nerve 

 ending on involuntary non- 

 striated muscle cell from 

 intestine of cat; methy- 

 lene-blue stain (Huber, 

 De Witt). 



this case the dendrite is a long one, medullated, and 

 structurally identical with an axis cylinder or axone. 

 The nerve impulse is, however, normally carried 

 toward the nerve cell, while in axones the impulse 

 goes the opposite way. As stated in another place, 

 such sensory neurons have a long dendrite that ex- 

 tends peripherally and a short axone that passes 

 centrally; that is, to the spinal cord or brain. 



