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The pectinate line (dentate line) is a line which divides the upper two thirds and lower third of the anal canal. Developmentally, this line represents the hindgut-proctodeum junction. It is an important anatomical landmark, and several distinctions can be made based upon the location of a structure relative to this line: ==Additional images== File:Rectoanal jxn.JPG|Microscopic cross section of the anorectal junction. File:Anorectum.gif |Anatomy of the anus and rectum File:Gray1078.png|Coronal section of rectum and anal canal. 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「pectinate line」の詳細全文を読む スポンサード リンク
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