CHAPTER XXI 



THE SYMPATHETIC NERVOUS SYSTEM 



THE sympathetic nervous system is an aggregation of ganglia, nerves, and 

 plexuses, through which the viscera, glands, heart, and blood-vessels, as well as 



Ciliary ganglion Maxillary nerve 

 Sphenopalaline ganglion v 

 Superior cervical ganglion of sympathetic \ \ 



Cervical plexus 



Brachial plexus 



Greater splanchnic nerve 

 Lesser splanchnic nerve 



Lumbar plexus 



Sacral plexus 



Pharyngeal plexus 



Middle cervical ganglion of sympathetic 

 Inferior cervical gang, of sympathetic 

 Recurrent nerve 



Bronchial plexus 



Cardiac plexus 



Esophageal plexus 

 ^Coronary plexui 



Left vagus nerve 



Gastric plexus 

 Celiac plexus 



Superior mesenteric plexus 



Aortic plexus 



Inferior mesenteric plexus 

 I 



Hypogastric plexus 



Pelvic plexus 



Bladder 

 Vesical plexus 



. ^ 

 Fig. 248. The sympathetic nervous system. (Schwalbe, Herrick.) 



smooth muscle in other situations, receive their innervation. As illustrated in 

 Fig. 248 it is widely distributed over the body, especially in the head and neck 



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