THE SPINAL CORD 



221 



Pons 



Bulb 



Cervical 

 Plexus 



Branch to 

 sympathetic 



system 

 Brachial 

 plexus 



Sympathetic 

 ganglia 



Lumbar 

 plexus 



Sciatic nerve 



Sacral plexus 



Coccygeal plexus 



FIG. 118. Diagrammatic front view of spinal cord and bulb, showing spinal nerves, 

 one side chain of sympathetic ganglia, and some of cranial nerves. 



a central organ, the brain and spinal cord, and of numer- 

 ous distributing branches, the nerves, which radiate 



