Bones of the Face. 



33 



M. genio- 

 hyoideus 



M.dijjastricus 



40, Inferior Maxillary Bone, Maxilla inferior, 



from the inside. 



Body. In the middle of its inner (posterior) surface is a promi- 

 nent one- or two-pointed tubercle, the Spina mentalis internet (genial 

 tubercle) ; beneath this are 2 rough impressions each for the origin of the 

 anterior belly of one of the digastric muscles. Externally to the tubercle, 

 the internal oblique line, Lima obliqua internet, sen mylo-hyoidea, commences. 

 In the alveoli of the upper border there are on each side 2 incisor teeth, 

 (D. incisivi) , 1 canine tooth (D. caninus) , 2 bicuspid teeth (D. buccales), 

 and 3 molar teeth (D. molares), whose last is also called the wisdom tooth. 



Rami. Each ramus shows in the middle of its inner surface 

 the Languid, behind which lies the inferior dental foramen, s. Foramen 

 maxillare internum, forming the beginning of a canal, the inferior dental 

 canal, Canalis alveolaris inferior, which runs through the substance of the 

 body and ends at the mental foramen. From the Foramen maxillare inter- 

 num a groove, the mylo-hyoidean groove, Sulcus mylo-hyoideus, runs obliquely 

 downwards. 



The inferior maxilla articulates with the glenoid fossae of both tem- 

 poral bones. 



Heitzmann, Atlas. I. 5 



