Photo of a sketch with paper labels identifying items in sketch, items labeled ""cecum, mesmtery, ileum, appendix, persistent omphalomesenteric artery, superior ileocecal fold, mesoappendix""
Photo of a sketch by J. Allen Chamberlin, M. D., parts labeled, ""Aorta, foregut, omphalomesenteric duct, paired omphalomesenteric arteries, hind gut""