GREAT VESSELS AND NERVES OF NECK 305 



the anterior border of the internal jugular vein ; it is crossed 

 by the hypoglossal nerve and the sterno-mastoid branch of the 

 occipital artery, the lingual and common facial veins ; and the 



Accessory 



Ganglion 



nodosum 



Pharyngeal 

 branch 



Superior la 



Hypoglossal' 



Descendens hypogl 



Ascending pharyngeal 



Internal carotid 



-Vagus 



-Jugular ganglion 



losso-pharyngeal 

 Superficial temporal 



maxillary 



External 



carotid 



Posterior 

 auricular 



Occipital 



Branch to 

 hyreo-hyoid 



Common carotid 



FIG. 122. Diagram of Carotid System of Vessels in the Neck with the 

 Glosso-pharyngeal, Vagus, Accessory, and Hypoglossal Nerves. 



descendens hypoglossi descends on its superficial surface. As 

 it proceeds upwards, it comes to lie under cover of the lower 

 end of the parotid gland, and then at a higher level under 

 cover of the posterior belly of the digastric, the stylo-hyoid, 

 VOL. II 20 



