. 
THE PERIPHERAL NERVOUS SYSTEM. 407 
smaller superior mesenteric ganglion (/); the two are con- 
nected by two strong nerve-trunks. 
The cceliac ganglion (@) receives from the sympathetic (a), 
in addition to the great splanchnic nerve, two (or three) lesser 
TR 3 
iS 
wa EZ 4 
Oe S 
i a RC RTA UD A CN NN 
Fic. 164, — SYMPATHETIC AND VAGUS IN THE ABDOMEN (SOMEWHAT SCHEMATIC). 
I, stomach; 2, crus and cut edge of diaphragm; 3, aorta; 4, coeliac artery; 5, 
superior mesenteric artery; 6, kidney, 7, inferior mesenteric artery; 8, large intes- 
tine. a@, main trunk of sympathetic; 4, great splanchnic nerve; ¢, lesser splanchnic 
nerves; @, coeliac (or semilunar) ganglion; ¢, coeliac plexus; 7, superior mesenteric 
ganglion; g, superior mesenteric plexus, following the artery; 4, aortic plexus; z, 
inferior mesenteric ganglion and plexus; 7, suprarenal plexus on suprarenal body; 4, 
renal plexus following renal artery; /, ventral cesophageal branch of vagus, forming 
anterior gastric plexus; 7, dorsal cesophageal branch of vagus, forming posterior 
gastric plexus. 
splanchnic nerves (c), 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. 
