THE VAGUS NERVE 



955 



surface of the oesophagus, and is distributed to the vosterior surface of the stomach and to the 

 cceJiac (solar) plexus and its offsets. 



-The left vagus descends through the root of the neck between the carotid and subclavian 

 arteries and m front of the thoracic duct. In the upper part of the superior mediastinum it is 

 crossed in front by the left phrenic nerve, and in the lower part of the same region it crosses in 



Fig. 744. — Diagram of the Branches of the Vagus Nerves. 



Glosso-pharyngeal nerve- | 

 Internal carotid artery . 

 Superior cervical sympathetic ganglion 



External carotid artery 



Rigtt vagus 



Auricular branch 

 Meningeal branch 

 Ganglion of root 

 Spinal accessory nerve 



' Hypoglossal nerve 



Loop between first two cervical 



nerves 

 Ganglion of trunk 



Superior laryngeal nerve 

 •Left vagus 



Superior cervical cardiac branch 



Recurrent nerve 



Cardiac branch from recurrent 

 nerve 

 Thoracic cardiac branch 

 (.right vagusj 



Recurrent nerve 



Cardiac branch from recurrent nerve 



Splenic plexus 



Hepatic plexus 

 Coeliac plexus 



■■ Renal plexus 



£t?rrnl-ti^ J^;?, R 1^ subclavian artery and the arch of the aorta and behind the left superior 

 SanKwWhnn;?o >w^-^°'V?u^''^ '* Pf'^' b«^^^^ t^^ l^ft bronchus and divides into 

 K-om thl. tSp..,^ f ^ ^u^ *TfK ^f ^t sympathetic to form the left posterior pulmonary plexus. 

 tomS„W l?r K f ^^'^' ""i*^^ ^""^^ •''^S^' '^'^^ ^s o^« o^ mo^« cords that break up into anas- 

 thrnW^w h?. *° ^■'''^ ^^^ anterior oesophageal plexus. At the lower part of the thorax 



of fhP r^^nrTv. ^^' ^''^^-^^^^''^''-u' ^'^l""^ P^^'^^ through the diaphragm on the anterior surface 

 ot;the oesophagus, and it is distributed to the anterior surface of theltomach and to the hver 



