1136 



THE DIGESTIVE SYSTEM. 



process termed the glenoid lobe is found, passing into the posterior or tympanic 

 part of the glenoid fossa. 



Another runs into the interval between the sterno - mastoid and digastric 

 muscles ; and a pharyngeal process is occasionally found extending medially, anterior 

 to the styloid process, towards the side of the pharynx. 



A pterygoid extension, between the two pterygoid muscles, cannot properly 

 be said to exist. 



Embedded in the superficial surface there are usually found several small 

 rounded lymph glands, which can be recognised from the gland tissue by the 

 difference in their colour. 



Internal jugular vein Hypoglossal nerve 



Accessory nerve 

 Digastric muscle 

 I 



Stylo-hyoid 



Giosso- r 



pharyngeal nerveL 

 Parotid gland 

 Posterior 

 facial vein 

 External carotid^- 



artery 

 Styloglossus^ 



Ascending 

 palatine artery 



Internal pterygoid 



Epiglottis 



Glosso-epiglottic 

 fold 



Masseter 



Pharyngeal portion 

 of tongue 



Fungiform papilli 

 Buccinator. 



Internal carotid artery 

 Vagus nerve 



Sympathetic trunk 



Ascending pharyngeal artery 

 Dens 



Retro-pharyngeal 

 lymph gland 



Superior 

 constrictor muscle 



Pharyngo-palatine 

 arch 



Palatine tonsil 



Pharyngo-epiglottic 

 fold 



Glosso-palatine 

 arch 



Vallate papillae 



Raphe of tongue 

 Conical papillae 



Fungiform papill 



FIG. 898. HORIZONTAL SECTION THROUGH MOUTH AND PHARYNX AT THE LEVEL OP THE PALATINE TONSILS. 



The pre vertebral muscles and the stylopharyngeus (which is shown just at the medial side of the external 

 carotid artery) are not indicated by reference lines. 



The facial process of the gland often of considerable size is a flat and some 

 what triangular portion which runs forwards from the upper part of the front o 

 the gland, and overlaps the masseter muscle to a varying extent ; from its rnos 

 anterior part the parotid duct emerges, and a separated portion of this process, oftei 

 found lying immediately above the duct, is known as the glandula parotis accessor!; 

 (O.T. socia parotidis). 



Ductus Parotideus (Stenonis). The parotid duct (O.T. Stenson's) leaves th 

 anterior border of the gland at its most prominent part (Fig. 89*7). It first run 

 forwards across the masseter, below the accessory parotid gland, and accornpanie< 

 by branches of the facial nerve, and the transverse facial artery, which is commonl; 

 some distance above, though its relation is variable. Having crossed th 

 masseter, it turns abruptly round the anterior' border of this muscle and run 



