marginal artery marginal artery marginal artery can refer to: marginal artery of the colon, also known as the artery of drummond right marginal branch of right coronary artery, a branch of the right coronary artery that follows the acute margin of the heart left marginal artery, a branch of the circumflex artery, traveling along the left margin of heart this article is issued from wikipedia. the text is licensed under creative commons - attribution - sharealike. additional terms may apply for the media files.