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Vomer
The vomer (〔''OED'' 2nd edition, 1989.〕〔(Entry "vomer" ) in ''(Merriam-Webster Online Dictionary )''.〕) is one of the unpaired facial bones of the skull. It is located in the midsagittal line, and articulates with the sphenoid, the ethmoid, the left and right palatine bones, and the left and right maxillary bones. The vomer forms the inferior part of the nasal septum, with the superior part formed by the perpendicular plate of the ethmoid bone.〔Illustrated Anatomy of the Head and Neck, Fehrenbach and Herring, Elsevier, 2012, page 52〕 The name is derived from the Latin word for a ploughshare and the shape of the bone.
==Structure==
The vomer is situated in the median plane, but its anterior portion is frequently bent to one or other side.
It is thin, somewhat quadrilateral in shape, and forms the hinder and lower part of the nasal septum; it has two surfaces and four borders.
The surfaces are marked by small furrows for blood vessels, and on each is the nasopalatine groove, which runs obliquely downward and forward, and lodges the nasopalatine nerve and vessels.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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