THE INTERNAL CAROTID ARTERY. 



245 



Internal Maxillary. Arises in the substance of paro- 

 tid gland at right angles to the temporal artery, passes 

 behind posterior border of inferior maxillary below con- 

 dyle, to be distributed to the deep structures of the face. 

 Its branches are divided by the external pterygoid muscle 

 into those of the first, second, and third portions. Those 

 of the first portion are the inferior dental, middle men- 

 ingeal, small meningeal, and tympanic. Those of the 

 second part are the deep temporal and muscular. Those 



A B c 



FIG. 109. INTERNAL MAXILLARY ARTERY. 



A, third portion ; B, second portion ; C, first portion. 



from the third part, descending palatine, spheno-palatine, 

 ptery go-palatine, Vidian, infra-orbital, alveolar. 



One Ascending. 



Ascending. Arises just above the point of bifurca- 

 tion of the common carotid, and sends off muscular, 

 pharyngeal, and meningeal branches. 



THE INTERNAL CAROTID ARTERY. 



The internal carotid artery gives off no branches in 

 the neck. It enters the carotid canal of the petrous 

 part of temporal bone, makes three bends and runs for- 

 ward in the cavernous groove of the sphenoid. Its 



