THE NERVOUS TISSUES. 



161 



ous with a dense, lamellated fibrous sheath surrounding each funicu- 

 lus, the perineurium. Between the lamellae of this sheath are lymph- 

 spaces, communicating with the lymph-clefts found between the 



Neuraxis of peripheral 



sensory neurone. 



Dendrite of per- 

 ipheral s e n - 

 sory neurone. 



Spinal ganglion. -/-- 



Anterior horn of gray matter of 



spinal cord. 

 Neuraxis of peripheral motor 



neurone. 



Sympathetic ganglion. 



Nerve-trunk. 



Neuraxis of sympathetic neurone. 

 Fig. 122. Diagram to show the composition of a peripheral nerve-trunk. 



Epineurium. 





Axis-cylinder. 

 -Neurilemma. 



Endoneurium. 







Perineurium. 



Fig. 123. Part of a cross-section through a peripheral nerve treated with alcohol. 

 The small circles represent the cross-sections of medullated nerve-fibers ; the axis-cylin- 

 ders show as points in their centers. The nerve is separated by connective tissue into 

 large and small bundles funiculi ; X 75* 

 II 



