出典:Wiktionary
出典:『Wiktionary』 (2014/09/17 18:55 UTC 版)
pectinate line (複数形 pectinate lines)
出典:Wikipedia
出典:『Wikipedia』 (2011/03/09 01:56 UTC 版)
The pectinate line (dentate line) is a line which divides the upper 2/3s and lower 1/3 of the anal canal. Developmentally, this line represents the hindgut-proctodeum junction.