Chap. V] 



THE SKELETON 



61 



LACRIMAL 

 PROCESS 



ETHMOID 

 PROCESS 



Fig. 34. — Right Inferior Turbinate 

 Bone. External surface. (Gerrish.) 



on the outer wall of each side. Each consists of a layer of thin, 

 cancellous bone, curled upon itself like a scroll ; hence its name, 

 "turbinated." They are below the superior and middle turbi- 

 nated processes of the ethmoid 

 bone. Abnormal conditions of 

 these bones and the membranes 

 covering them cause some of the 

 more common nasal diseases. 

 (See Fig. 140.) 



Lacrimal bones. — Are the 

 smallest and most fragile bones of 

 the face. They are situated at the front part of the inner wall 

 of the orbit, and resemble somewhat in form, thinness, and size, 

 a finger-nail. They are named lacrimal because they contain part 

 of the canal through which the tear duct runs. 



Malar, or yoke bone. — Forms the prominence of the 

 cheek, and part of the outer wall and floor of the orbit. 

 A prominent spine of bone projects backward from 

 the body of the malar, and articulates by its free 

 extremity with the corresponding spine projecting 

 forward from the temporal bone, thus making the 

 two members of the true arch known as the zygo- 

 matic arch. 



Palate bones. — They are shaped like an " L," 

 and form (1) the back part of the roof of the mouth ; (2) part 

 of the floor and outer wall of the nasal fossae; (3) a very 

 small portion of the floor of the orbit. 



Fig. 35. — 

 Lacrimal 

 Bone. 



FRONTAL PROCESS 



ZYGOMATIC 

 PROCESS-"" 



MhXILLARV 

 PROCESS 



Fig. 36. — Right Malar Bone. Outer surface. (Gerrish.) 



