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A MANUAL OF VETERINARY PHYSIOLOGY 



Ret 



Fig. 80. — Diagram to illustrate the Nerves of the Alimentary Canal ok 

 the Dog (Foster). 



(The figure is very diagrammatic, and does not represent the anatomical relations. ) 



Oe. to Ret., The alimentary canal from the oesophagus to the rectum. 



LV., Left vagus nerve ending on the front of the stomach ; r.l., recurrent laryngeal 

 supplying upper part of oesophagus; R.V., right vagus joining left vagus 

 in the oesophageal plexus Oe. pi., supplying the posterior part of the stomach, 

 continued as R'.V. to join the solar plexus, Sol. pi., here represented by a 

 single ganglion, and connected through x with the inferior mesenteric gan- 

 glion (or plexus). G.m.i. a, a, a, branches from the solar plexus to stomach 

 and small intestines, and b, from the mesenteric ganglion to the large intes- 

 tines. 



Spl., Large splanchnic nerve arising from the thoracic ganglia of the sympathetic, 

 Sy., and rami communicantes, r.c, of the dorsal nerves. 



Spl.mi., Small splanchnic nerve. Both the large and small splanchnics join the 

 solar plexus, and thence make their way to the alimentary canal, supplying 

 the small intestine with inhibitory impulses. 



G.m.i., Inferior mesenteric ganglion formed by nerves running from the dorsal 

 and lumbar cord. From this ganglion inhibitory nerves are given off to the 

 large intestines. 



n.e., Nervi erigentes arising from the sacral cord, and proceeding to the hypo- 

 gastric plexus. PL hyp., from this plexus impulses of a motor kind are 

 supplied to the large intestines. 



circumstance, as they are normal to the bowel in consequence 

 of bacterial activity. Oxygen gas, on the other hand, inhibits 



