THE NERVOUS TISSUES. 



161 



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

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

 spaces, communicating with the lymph-clefts found between the 



Neuraxis of periphe 

 sensory neurone 



ral 



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. \^^ ' }^ 1 ~^ 



Neuraxis of sympathetic neurone. 

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



Epineurium. 



is- Axis-cylinder. 

 1 .- Neurilemma. 



\j-*~ Endoneurium. 



t' 



"1. 



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 



