

THE MAXILLA 



157 



merit to the lateral cartilage of the nose; near its middle is a notch which marks 

 the end of the groove just referred to. The lateral border is serrated, bevelled 

 at the expense of the inner surface above, and of the outer below, to articulate 

 with the frontal process of the maxilla. The medial border, thicker above than 



Fossa for lacrimal sac 



Infraorbital 

 foramen 



FIG. 154. Articulation of nasal and lacrimal bones with maxilla. 



oelow, articulates with its fellow of the opposite side, and is prolonged behind into 

 i vertical crest, which forms part of the nasal septum: this crest articulates, from 

 above downward, with the spine of the frontal, the perpendicular plate of the 

 3thmoid, and the septal cartilage of the nose. 



Foramen 

 jar vein, 



IG. 155. Right nasal bone. Outer surface. 



Crest 



Groove 

 for nerve 



FIG. 156. Right nasal bone. Inner surface. 



Ossification. Each bone is ossified from one center, which appears at the beginning of the 

 third month of fetal life in the membrane overlying the front part of the cartilaginous nasal 

 capsule. 



Articulations. The nasal articulates with four bones: two of the cranium, the frontal and 

 ethmoid, and two of the face, the opposite nasal and the maxilla. 



The Maxillae (Upper Jaw). 



The maxillae are the largest bones of the face, excepting the mandible, and 

 3rm, by their union, the whole of the upper jaw. Each assists in forming the 



