35 



THE NERVOUS SYSTEM 



N. VII 



Internal carotid plexus 



ToN.X 



ToN.IX 



To cervical N. I 



To sacral N. I 



N.II 

 N.III 



IV 



Visceral branches 

 sacral nerves 



N.IV 

 N. V 

 To coccygeal nerve 



Ciliary ganglion 



Splenopalatine ganglion 



N. IX 



Otic ganglion 



Superior cervical ganglion 



Pharyngeal plexus 



N, VII 



Submaxillary ganglion 



Middle cervical ganglion 



Superior cardiac N. 



Middle cardiac N. 



Inferior cardiac N. 



Cardiac branches of vagus 



Vagus and left pulmonary plexus 



Cardiac plexus 



Left coronary plexus 



Esophageal plexus 



Splanchnic nerves 



Hepatic plexus 

 Left vagus nerve 



^Gastric plexus 



.Myenteric and sub- 

 mucous plexuses 



Splenic plexus 



Celiac plexus 

 perior mesenteric 

 plexus 

 ^ * 

 Inferior mesenteric plexus 



^Abdominal aortic plexus 



4 



Hypogastric plexus 



Fig. 257. Diagram of the sympathetic nervous system. The red lines indicate the branches 

 of the cerebrospinal nerves which join the sympathetic system and those sympathetic nerves which 

 are composed in major part of fibers from the cerebrospinal nerves. (Modified from Jackson- 

 Morris.) 



but merely pass through that plexus to end in the terminal ganglia, such as the 

 small groups of nerve-cells in the myenteric and submucous plexuses of the in- 

 testine (Fig. 250). 



