Anal columns (Columns of Morgagni or less commonly Morgagni's columns) are a number of vertical folds, produced by an infolding of the mucous membrane and some of the muscular tissue in the upper half of the lumen of the anal canal. They are named after Giovanni Battista Morgagni who also has several other eponyms named after himself.
Famous quotes containing the word columns:
“Rage is the only quality which has kept me, or anybody I have ever studied, writing columns for newspapers.”
—Jimmy Breslin (b. 1929)