Anocutaneous line

Anocutaneous line
The interior of the anal canal and lower part of the rectum. (Line not shown but region is visible.)
Details
SystemAlimentary system
Identifiers
Latinlinea anocutanea
TA98A05.7.05.012
TA23019
FMA15715
Anatomical terminology

The anocutaneous line, also called the Hilton white line or intersphincteric groove, is a boundary in the anal canal.

Below the anocutaneous line, lymphatic drainage is to the superficial inguinal nodes.

The anocutaneous line is slightly below the pectinate line and a landmark for the intermuscular border between internal and external anal sphincter muscles.

The anocutaneous line represents the transition point from non-keratinized stratified squamous epithelium of the anal canal to keratinized stratified squamous epithelium of the anus and perianal skin.

In live persons, the color of the line is white, hence the alternative name. It is named for John Hilton.

See also



This page was last updated at 2024-01-19 22:36 UTC. Update now. View original page.

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