182 PRACTICAL MICROSCOPY. 



Ganglion cells are surrounded by irregular channels or lymph- 

 spaces, and are thus in intimate relation with the lymphatic system. 



CONNECTIVE TISSUE OF THE NERVOUS SYSTEM. 



The connective tissue, which serves to unite the elements of a nerve 

 trunk, does not differ materially from the susteutacular tissue of other 

 organs. Different terms are applied, according to its use and loca- 

 tion, as follows: 



EPINEURIUM. Forming the sheath of the entire nerve trunk. 



PERINEURIUM. Surrounding the bundles composing the nerve 

 trunk. 



ENDONEURIUM. Permeating and uniting the elements of the bun- 

 dles. 



Fia. 119. TRANSVERSE SECTION OP THE A.NTERIOR CRURAL NERVE. X 250. 



A. The epineurium. 



B. Adipose tissue in the loose areolar tissue of the sheath. 



C. Lymph-spaces of the epineurium. 



D. Large blood-vessels of epineurial sheath. 



E. Perineurium surrounding nerve bundles. 



F. Lymph-spaces of last. 



G. Medullated nerves in T. S. supported by connective tissue endoneurium. 



