Pectinate line

From BugSigDB


The pectinate line (anocutaneous line, dentate line, anorectal junction) is a line which divides the upper 2/3rds and lower 1/3rd 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:
Aliases
  • Dentate line
  • Hilton's 'white line'
  • Linea anocutanea
  • Linea pectinata canalis analis
  • Pectinate line of anal canal
  • Recto-anal junction
  • Site of anal membrane