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. 



Nerve-trunk. 



Spinal ganglion. -- 



Anterior horn of gray matter of 



spinal cord. 

 Neuraxis of peripheral motor 



neurone. 



Sympathetic ganglion. 

 Neuraxis of sympathetic neurone. 



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



?"- Axis-cylinder. 

 8 Xeurilemma. 



#*--'-- 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 



