THE FACE 



329 



Its inner surface is concave from above downward, and nearly 

 straight from before backward. It faces downward and inward, form- 

 ing the roof and the outer wall of the posterior narial passage. 



Nomenclature. Palatum is the roof of the month ; hence this 

 bone is known as the palate or palatine bone, or as os palatinum. The 

 French name is le palatin ; the German, das Gaumenbein. 



FIG. 257. 



Posterior part of Frontal Sinus. Sagittal Suture, 



Median Plate of Frontal. &- - 



\ --f'- 1 



I. _ < xs* > 



Orbital Ridge. 



Opening into Anterior part of Frontal 

 Simis, with Posterior end of Lat- 

 eral Ethmoid. 



Foramina for Olfactory Filaments. 



jj| 



Ml Zygoma. 



J m 



Orbital Plate of Frontal 



Cut Edge of Cribriform Plate. 

 Vertical Plate of Pala- /? 



B 

 ,,.! 



Lateral Ethmoid. 



Cribriform Plate of 

 Ethmoid. 



Mesethmoid. 

 Sinus. 



Vomer. 

 Lachrymal 



Lachrymal Canal 



Alveolar Border. 



Malar. 



\ 

 Maxillary \ - 



Tuberosity. Infraorbital 



Foramen. 



TRANSVERSE VERTICAL SECTION OF SKULL THROUGH ORBITS, SEEN FROM BEHIND. 



Determination. When the palatine is held with the vertical 

 plate uppermost and the anterior larger end away from the student, 

 the maxillary process points to the side to which the bone belongs. 



Articulation. The palatine articulates with the maxillary, the 

 lachrymal, the frontal, the ethmoid, the presphenoid, the orbito- 

 sphenoid, the vomer, the pterygoid, and the opposite palatine. 



Muscular Attachments. The palatine furnishes attachment by 

 its orbital surface to the external pterygoid, and by its postnasal 

 spine to the azygos uvulse. 



Ossification. The palatine appears to develop from a single 

 centre of ossification. 



