i66 



ELEMENTS OF HISTOLOGY. [chap. xx. 



soon connected with a nerve-fibre. At the back 

 of the tongue there are similar small microscopic 

 ganglia. 



CHAPTER XX. 



THE SYMPATHETIC SYSTEM. 



223. THE sympathetic nerve-branches are of exactly 

 the same nature in their connective tissue investments 

 (epi- peri- and endo-neurium), and in the arrangement 



Sympathetic Nerves. 



A, A small bundle invested in an endothelial sheath perineuriuni ; B, one 

 medullated and three non-medullated nerve-flbres of various sizes; the 

 largest shows division ; c, two varicose nerve-fibres. (Atlas.) 



of the fibres in bundles (Fig. 96, A), as the cerebro- 

 spinal nerves. Most of the nerve-fibres in the bundles 

 are noii-medullated or Remak's fibres (Fig. 96, B), each 



