THE FACE 



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produced external angle will be on the side to which the bone 

 belongs. 



Articulation. The nasals articulate with the premaxillaries, the 

 maxillaries, the frontals, and the ethmoid, and support the cartilage 

 of the external nose. 



Ossification. The nasal develops from one centre of ossification. 



VARIATIONS IN THE NASAL BONES. 

 VARIATIONS IN SIZE. 



In the following table are given the measurements of twenty-five 

 left nasal bones : 



The median length is the maximum length of the median surface. 



o O 



The lateral length is the maximum length of the outer surface, 

 including the angular process. 



The width is the maximum transverse diameter of the anterior 

 surface. 



The lateral width is the maximum antero-posterior diameter of the 

 outer surface. 



The length of the ethmoidal fossa is the distance from the superior 

 border of the bone to the superior border of the true fossa. 



