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:
“A few more days, and this essay will follow the Defensio Populi to the dust and silence of the upper shelf.... For a month or two it will occupy a few minutes of chat in every drawing-room, and a few columns in every magazine; and it will then ... be withdrawn, to make room for the forthcoming novelties.”
—Thomas Babington Macaulay (1800–1859)