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In anatomy, a meatus ,〔>''OED'' 2nd edition, 1989, as .〕 plural "meatus" or "meatuses",〔>(Entry "meatus" in Merriam-Webster Online Dictionary ).〕 is a natural body opening or canal. Examples include: * the external acoustic meatus, the opening of the ear canal * The internal auditory meatus, a canal in the temporal bone of the skull * the urinary meatus, which is the opening of the urethra, situated on the glans penis in males, and in the vulva in females * the superior meatus, middle meatus and inferior meatus of the nose (The plural forms of "meatus" are: ''meatus'', as a Latin form (of the fourth declension noun class, which the word belongs to); or ''meatuses'', as a normally derived English plural; or often, and incorrectly, ''meati'', by false analogy with the very common Latin ''-us/-i'' forms (such as ''alumnus/alumni''), i.e., the second declension noun class.) ==See also== * Meatal stenosis * Fossa (anatomy) * Foramen (disambiguation) 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Meatus」の詳細全文を読む スポンサード リンク
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