758 



THE NEKVOUS SYSTEM. 



or cavernous plexus (pi. cavernosus). Both plexuses supply offsets to the artery and 

 its branches, and form communications with certain cerebral nerves. 



PI. Carotids Interims. The internal carotid plexus communicates by fine 



Kami communicantes 



Greater splanchnic nerve - -. 



Lesser splanchnic nerve _ JS 



Coeliac ganglion --*--: 



Lowest splanchnic nerve -- 



Aortico-renal ganglion 

 Superior mesenteric plexus 



Aortic plexus 

 Spermatic plexus 



Branches to aortic arch 



- Kami communicantes 



Kami communicantes 

 | Left vagus 



} Right vagus 



-- Thoracic sympathetic trunk 



-- (Esophageal plexus 



Branches to oesophagus 



Blanches to descending aorta 



v Splanchnic ganglion 



| Lesser splanchnic nerve 

 Lowest splanchnic nerve 



--- Coeliac plexus 

 -- Suprarenal plexus 



- Lowest splanchnic nerve 

 Lesser splanchnic nerve 



Renal plexus 



Fir. 638. THE SYMPATHETIC TRUNK IN THE THORAX. 



branches with (a) the abducens nerve, and (6) the semilunar ganglion, and give* 

 off (c) the great deep petrosal and (d) the carotico-tympanic nerves. The deei 

 petrosal nerve joins the greater superficial petrosal nerve from the genicular ganglior 



