CER I ICA L a A .\(r L I A 



829 



and communicates with the iipjxT cervical cardiac hrancli of the pneumogastric 

 Avith tlie middle cardiac nerve of the sympathetic, and with the external laryngeal 

 and recurrent larvngeal nerves. 



Fig. 470.— The Cervical Portion of the Sympathetic and the Distribution of 

 THE Pneumogastric Nerve, viewed from behind. (Kiause.) 



Stylo-hyoid Ligamentum pharyngeum 



\i 



Posterior belly of 

 digastric 



Steruo-mastoid 



HectuB capitis 

 anticus major 



Stylo-pharyngeue 



Stylo-glossus 



Internal pterygoid 



SUPERIOR 

 CERVICAL 

 GASGLlOy 



Middle constrictor 



Common carotid 

 artery 



Inferior constrictor 



GAXGLIOX 

 THYROIDECM 

 (VARIETY) 



THYROID GLAND 



Inferior thyroid 

 artery 

 Subclavian artery 



RECURREST 

 LARYNGEAL 

 NER VE 



Thoracic aorta 



CruE of diaphragm 



Internal carotid 



artery 

 RIGHT 

 SYMPATHETIC 



Occipital artery 



Posterior belly of 

 digastric 



DESCEyDEXS 

 HYPOGLOSSI 



Common carotid 

 itrtery 



Sterno-mastoid 



TWIG OF 

 RECURRENT 

 LARYNGEAL TO 

 PHARYNGEAL 

 PLEXUS 



Thyroid axis 



INFERIOR 

 CERVICAL 

 GANGLION 



RECURRENT 

 LARYNGEAL 



PLEXUS GUL^ 



L_ RIGHT 



PNEUMOGASTRIC 



On the right side the nerve passes in front of (occasionally behinfl) the sub- 

 clavian artery, and is directed along the innominate artery to reach the bifurcation 

 of the trachea, in front of which it terminates in the deep cardiac })lexus. 



