22 



Bones of the Face. 



Crista 



Canalls na 

 palatinu 



24. liiglit Superior Maxillary Bone, Maxilla superior, 



from tlie inner side. 



The nasal surface of the body shows the large opening of the 

 antruin of High-more ; in front of this a semi-canal, the lachrymal groove, 

 Sulcus lacrymalis. 



The outer surface of the nasal process of the superior maxilla 

 (Fig. 23) is divided into an anterior and a posterior portion, by an elon- 

 gation of the Margo infraorbitalis ; the posterior portion forms the Fossa sacci 

 lacrymalis, which is continued into the Sulciis lacrymalis. The inner sur- 

 face of the nasal process is transversely cut by a rough crest, the 

 superior turbinated crest or Crixta cthmoidalis (not constant) ; a thumb's 

 breadth below this the inferior turbinated crest or Crista turbinalts, passes 

 transversely across the surface, from the lower end of the Sulcus lacrymaUs ; 

 between both crests lies the middle m e a t u s, Mcatus narium medfiis. 



The zygoma tic process (Fig. 23) is a rough triangular 

 eminence and serves for articulation with the malar bone. 



