A STUDY OF THE SKELETON 



173 



single bones (the frontal, occipital, sphenoid, and ethmoid). 

 In addition to these eight, there are within the temporal 

 bones three very small bones in the middle region of each 

 ear cavity (see p. 309). 



The Bones of the Face. Twelve of the fourteen face bones 

 are in pairs. The two cheek bones or malar bones lie on the 

 outer and lower sides of the eye sockets. The bridge of the 



FIG. 71. Bones of Skull. 



nose is made by the pair of na'sal bones. Between the two 

 halves of the nose is a single thin partition of bone (the 

 vo'mer), and on the outer walls of each nostril chamber are 

 the tur'bi-nate or spongy bones (see Fig. 133). A small, thin 

 tear bone on each side helps to form the separation between 

 the eye socket and the nose, while the two paVate bones 

 lie horizontally between the nose and mouth cavities. And, 

 finally, there are two halves to the upper jawbone to which 

 are united the upper teeth, and a single lower jawbone or 

 man'di-ble in which the lower teeth are imbedded. The 



