R.V 



Diagram to illustrate the nerves of the alimentary canal in the dog. 

 (Foster.) The figure is, for the sake of simplicity, made as diagrammatic 

 as possible, and does not represent the anatomical relations: Oe. to Ret., 

 the alimentary canal, esophagus, stomach, small intestine, large intestine, 

 rectum; L.V., left vagus nerve, ending on front of stomach; r.L, recurrent 

 laryngeal nerve supplying upper part of esophagus; R.V., right vagus 

 joining left vagus in esophageal plexus, oe.pl. , supplying posterior part 

 of stomach and continued as R' .V '. to join the solar plexus, here represented 

 by a single ganglion and connected with the inferior mesenteric ganglion 

 (or plexus) m.gl.; a, branches from the solar plexus to stomach and small 

 intestine and from the mesenteric ganglion to the large intestine; Spl.maj., 

 large splanchnic nerve arising from the thoracic ganglia and rami communi- 

 cantes, r.c., belonging to dorsal nerves from the sixth to the ninth (or tenth) ; 

 Spl.min., small splanchnic nerve similarly arising from tenth and eleventh 

 dorsal nerves. These both join the solar plexus and thence make their 

 way to the alimentary canal; c.r., nerves from the ganglia, etc., belonging 

 to eleventh and twelfth dorsal and first and second lumbar nerves, pro- 

 ceeding to the inferior mesenteric ganglia (or plexus), m.gl., and thence 

 by the hypogastric nerve, n.hyp., and the hypogastric plexus, pi. hyp , 

 to the circular muscles of the rectum; l.r., nerves from the second and third 

 sacral nerves, S.2, S.3 (nervi erigentes), proceeding by the hypogastric 

 plexus to the longitudinal muscles of the rectum. 



