388 



MAMMALIAN ANATOMY 



The Body presents external and internal surfaces, and superior, 

 inferior, and anterior borders. 



The external surface is bounded above by the superior border ; 

 in front by the anterior border ; and below by the anterior and inferior 

 borders. Behind, it passes into the external surface of the ascending 

 ramus. It is about three times as long as wide. The upper and lower 

 margins are nearly parallel, and are curved slightly upward. The 



FIG. 310. 



Incisors. 



Canine. 



Premolars. 



Molar. 



Condyle.- 

 LOWER JAW, FROM ABOVE. 



anterior end is cut off obliquely, the anterior border running backward 

 at the expense of the lower border. 



The external surface is gently convex in both directions, and its 

 anterior part turns boldly inward round the root of the canine tooth, 

 and, with the corresponding surface of the opposite bone, faces forward 

 and downward when the two bones are united at the symphysis. The 

 position of the root of the canine is marked by a prominent swelling, 



