THE PERIPHERAL NERVOUS SYSTEM. 



407 



smaller superior mesenteric ganglion (/); the two are con- 

 nected by two strong nerve-trunks. 



The cceliac ganglion (d} receives from the sympathetic (a), 

 in addition to the great splanchnic nerve, two (or three) lesser 



FIG. 164. SYMPATHETIC AND VAGUS IN THE ABDOMEN (SOMEWHAT SCHEMATIC). 

 I, stomach; 2, cms and cut edge of diaphragm; 3. aorta; 4, cceliac artery; 5, 

 superior mesenteric artery; 6, kidney, 7, inferior mesenteric artery; 8, large intes- 

 tine, a, main trunk of sympathetic; b, great splanchnic nerve; c, lesser splanchnic 

 nerves; d, cceliac (or semilunar) ganglion; e, cceliac plexus; f. superior mesenteric 

 ganglion; g, superior mesenteric plexus, following the artery; h, aortic plexus; t, 

 inferior mesenteric ganglion and plexus; 7', suprarenal plexus on suprarenal body; kj 

 renal plexus following renal artery; /. ventral cesophageal branch of vagus, forming 

 anterior gastric plexus; #z, dorsal cesophageal branch of vagus, forming posterior 

 gastric plexus. 



Splanchnic nerves (V), which arise from the main trunk of the 

 sympathetic, the first just as it reaches the abdominal cavity, 

 the second one or two centimeters caudad of the diaphragm. 



From the coeliac and superior mesenteric ganglia a network 

 of nerves passes in all directions to the abdominal viscera. 



