THE PNEUMOGASTRIC NERVE. 



341 



Fig. 170. 



ILLUSTRATION OF THE LEFT TNEUMOGASTRIC NERVE. 



Fig. 170 : 1, 1, 1, the pneumogastric nerve ; 2, anastomosis of it with 

 the hypoglossal ; 3, anastomosis of plexiform ganglion with internal 

 branch of the spinal ; 4, pharyngeal, passing in front of the internal car- 

 otid artery ; 5, superior laryngeal, behind the internal carotid artery ; 6, 

 external laryngeal ; 7, laryngeal plexus, formed by external laryngeal 

 and great sympathetic ; 8, superior cardiac ; 9, middle cardiac ; 10, 10, 



inferior laryngeal, or recurrent, 

 forming a curve round the arch 

 of the aorta ; 11, pulmonary gan- 

 glion ; 12, its anastomosis with 

 the great sympathetic ; 13, pos- 

 terior pulmonary plexus ; 14, 

 cesophageal plexus; 15, curves 

 formed around the oesophagus 

 by the right and left pneumo- 

 gastrics; 16, cesophageal strand 

 traversing the diaphragm ; 17, 

 plexus formed by the strand 

 upon the anterior face of the car- 

 diac end; 18, branches for the 

 great end of the stomach; 19, 

 branches for the small curva- 

 ture ; 20, branches for the ante- 

 rior face of the stomach ; 21, 

 hepatic branches commingling 

 with the hepatic plexus of the 

 great sympathetic, and ramify- 

 ing in the substance of the liver, 

 22, glosso- pharyngeal. 23, its 

 lingual branch , 24, pharyngeal 

 branch ; 25, branch for the sty- 

 lo-pharyngeal muscle; 26, spi- 

 nal ; 27, internal branch, aiding 

 to form the pharyngeal nerve ; 

 28, external branch; 29, twig 



The left pneumogastric nerve. o f external branch anastomos- 



ing with the third cervical ; 30, anastomosis with trapezian branch of 

 the fourth cervical ; 31, cervical portion of great sympathetic ; 32, 32, 

 thoracic portion ; a, thyroid body ; b, trachea ; c, left lung, drawn to the 

 right ; d, liver, raised ; e, oesophagus ; /, great end of the stomach, 

 drawn to the left ; g, arch of the aorta ; the carotid, and subclavian ar- 

 teries, cut. 



