THE HEAD AND NECK. 83 



3. The external pterygoid muscle, with one insertion into the depression 

 in front of the condyle, and another into the interarticular fibro-cartilage. 



4. The internal pterygoid muscle, inserted into the inner surface of the 

 ramus. See this muscle coming down from the pterygoid fossa. 



Descending palatine artery 

 Palato-pharyngeus 



TONSIL 



Ascending palatine branch 



of facial 

 Tonsillar branch of dorsalis 



lingual 



Tonsillar branch of facial 

 Stylo-gloBsus 



Dorsalis linguae artery 



Middle constrictor 

 HYPOGLOSSAL NERVE 



Facial artery 



Posterior belly of digastric 

 and stylo-hyoid 

 Supra-hyoid branch 



SUP. LARYNOEALN. 



Infra-hyoid branch 

 Internal carotid artery 



Falato-glossus 



Ranine artery 



Common carotid artery 



FIG. 47. SCHEME OF THE RIGHT LINGUAL ARTERY. (Walsham.) 



a inferior / I 



Lingual! 



Qenio-hyo-glOBBUB 



Genio-hyoid 



Anterior belly of 



digastric 



Hyo-glosBus 



Mylo-hyoid 



FIG. 48. SIDE VIEW OF THE MUSCLES OF THE TONGUE. 



5. The inferior dental nerve and artery, between the neck of the mandible 

 and the internal lateral ligament of the joint. This ligament you will see 

 extending from the spine of the sphenoid to the lingula of the mandible ; under 

 it are the above structures, the inferior dental nerve and vessels. 



6. The internal maxillary artery (Fig. 51), between the neck of the jaw 



