MALAR AND NASAL BONES. 



49 



of the crest, while from its lower end a point projects downwards between 

 the incisor foramina. The inferior border articulates with the ridge or 

 crest which rises from the palate plates of the maxillary and palate 

 bones. The posterior border, thin, smooth, and unattached, separates the 

 posterior nares. 



THE MALAR BONE. 



The malar bone forms the most prominent part of the cheek, and, by a 

 deep plate, divides the orbit from the temporal fossa. It articulates by a 

 broad serrated surface near its anterior inferior angle with the malar process 

 of the superior maxillary bone, by a slenderer posterior process with the 

 zygoma, by a superior process with the frontal, and, continuously with that, 

 by the margin of its deep plate with the great wing of the sphenoid bone. 

 Between its sphenoidal and maxillary articulations a small portion of free 

 margin generally intervenes, which closes the anterior extremity of the 

 spheno-m axillary fissure. The facial surface is convex, and pierced by one 

 or more malar foramina, which pass through from the orbital surface and 

 transmit a small nerve and vessels. The orbital surface is concave from 

 above downwards, and enters into the formation 

 of the outer wall and floor of the orbit. The pj g> 49. 



posterior surface is concave from side to side, and 

 looks into the temporal and zygomatic fossae ; it 

 is also pierced by a small foramen. 



12 



Fig. 42. RIGHT MALAR BONK. 



A, from the outside ; B, from the inside. 



1, superior or frontal angle and serrated edge ; 2, 

 posterior or external angle and serrated surface for the 

 zygoma ; 3, anterior or internal angle ; 4, inferior 

 angle ; from 1 to 2, the temporal border ; from 1 to 3, 

 the orbital border ; from 1 to 8, edge of articulation 

 with the frontal and sphenoid bones ; at 8, the notch 

 terminating generally the spheno-maxillary fissure; 

 from 2 to 4, the masseteric rough border; between 

 8, 3, and 4f the triangular serrated surface for articula- 

 tion with the superior maxillary bone ; 5, the external 

 surface ; 6, the deep or posterior surface ; 5 and 6, are 

 placed near the foramina for the temporo-malar nerves ; 

 7, the orbital surface, with the orbito-malar foramen. 



THE NASAL BOXE. 



The nasal bones form the bridge of the nose. They are thick and narrow 



Fig. 43. 



Fig. 43. RIGHT NASAL BONE, f 

 A, from the front ; B, from behind. 



1, upper or frontal serrated border; 2, internal border 

 for adjacent articulation ; 3, external or superior maxillary 

 border ; 4, lower free border ; in B, 4 is placed at the 

 lower end of the groove for the nasal nerve. 



above, but gradually become wider and thinner 

 below. The superior border of each is serrated, 

 and articulates with the frontal bone ; the inferior 

 unites with the lateral nasal cartilage ; the 

 external edge articulates with the ascending 

 process of the superior maxillary bone ; and the internal with its fellow, 



