22 EQUINE ANATOMY. 



It also shows an external and internal face, an external and 

 internal border. 



The external face is convex from side to side and smooth. 



The internal face gives attachment to the ethmoid, and is covered 

 with mucous membrane. 



The external border unites with the lachrymal, superior and 

 inter- maxillaries, the internal with the opposite nasal. 

 Articulations, 5. 



Frontal, lachrymal, superior maxillary, inter-maxillary and 

 opposite. 



INFERIOR TURBINATED. 



These two scroll-shaped bones are attached to the superior 

 maxilla and palate, and rolled from behind forward. It separates 

 the middle from the inferior nasal meatus. 

 Articulations, 2. 



Superior maxilla and palate. 



VOMER. 



The vomer is a single bone in the median facial line, forming 

 part of the nasal septum, and attached above to the sphenoid by 

 its upper extremity, which is divided into two narrow processes. 

 Its lower extremity is attached to the superior maxillary palate 

 and pre-maxillary bones. Its two lateral faces are smooth and 

 covered with mucous membrane. 

 Articulations, 8. 



Sphenoid, ethmoid, two superior maxillary, two pre-maxillary 

 and two palate. 



INFERIOR MAXILLA. 



The lower jaw is a large bone forming the inferior and anterior 

 part of the face, and articulating with the two temporal bones. 

 It. is convex externally, concave internally, forming the inter- 

 maxillary space. It consists of two extremities, an inferior and 

 superior, two faces, external and internal, and two borders, a 

 superior and inferior. 



The inferior extremity shows 



The union of the two lateral halves of the bone. 



An inferior or labial face, smooth and convex, containing the 

 opening of the mental foramen on the sides; at this point it is 

 constricted, the neck. 



