THE TENTH NERVE, VAGUS OR PNEUMOGASTRIC NERVE 621 



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Va.f 



A.BR 



FIG. 415. 



FIG. 416. 



FIG. 415. The Distribution of the Tenth or Vagus Nerve. Va.R, Va.L., Right and 

 left vagi; r, ganglion of the root and connections with Sy., sympathetic, superior cervical 

 ganglion; g.Ph., glosso-pharyngeal; Ace., spinal accessory nerve; m, meningeal branch; Aur. 

 auricular branch; /, ganglion of the trunk and connections with Hy., hypoglossal nerve; 

 Ci, 2, loop between the first two cervical nerves Sy., sympathetic, Ace., spinal accessory 

 nerve; Ph., pharyngeal branch; Ph.Pl., pharyngeal plexus; S.L., superior laryngeal nerve; 

 I.L., internal laryngeal branch; E.L., external laryngeal branch; I.C., internal, and E.G., 

 external carotid arteries; Cai, superior cervical cardiac branch; Ca2, inferior cervical 

 cardiac branch; R.L., recurrent laryngeal nerve; Ca$, cardiac branches of recurrent laryn- 

 geal nerve; Ca^, thoracic cardiac branch (right vagus); A. P. PL, anterior, and P. P. PI., 

 posterior pulmonary plexuses; Oes.Pl., esophageal plexus; Gast.R. and Gast.L., gastric 

 branches of vagus (right and left); Coe.PL, celiac plexus; Hep.Pl., hepatic plexus; PI., 

 splenic plexus; Ren.PL, renal plexus. (Cunningham.) 



FIG. 416. The Constitution of the Cardiac Plexus. Sy., Cervical sympathetic cord; 

 C.i, superior, C.2, middle, and C.$, inferior cervical ganglia; Car.i, superior, Car. 2, middle, 

 and Car.3, inferior cervical cardiac sympathetic branches; Fa., vagus nerve; R.L., recurrent 

 laryngeal nerve; s, superior, and *,* inferior cervical cardiac branches of vagus; D.C.P., 

 deep cardiac plexus; S.C.P., superficial cardiac plexus; A. P. P., anterior pulmonary 

 plexus; P.P.P., posterior pulmonary plexus; R.Car.P., right, and L.Car.P., left coronary 

 plexuses; Art.Pul., pulmonary artery. (Cunningham.) 



