THE SYMPATHETIC NERVOUS SYSTEM 



969 



certain of the cranial and spinal nerves all end in sympathetic ganglia and are 

 known as preganglionic fibers. From these ganglia postganglionic fibers arise and 



Maxillary nerve 

 Ciliary ganglion 

 Sphenopalatine ganglion 

 Superior cervicai. 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 ganglion of 



sympathetic 

 Recurrent nerve 



Bronchial plexus 



Cardiac plexus 



(Esophageal plexus 

 Coronary plexuses 



Left vagus nerve 



Gastric plexus 

 Codiac plexus 



Superior mesenteric 

 plexus 



Aortic plexus 



Inferior mesenteric 

 plexus 



Hypogastric plexus 



Pelvic plexus 



Bladder 

 Vesical plexus 



FIG 838. The right sympathetic chain and its connections with the thoracic, abdominal, and pelvic plexuses 



(After Schwalbe.) 



conduct impulses to the different organs. In addition, afferent or sensory fibers 

 connect many of these structures with the central nervous system. 



