Œsophageo-gastric junction, [45]
Omega loop, development of, [77]
Omental bursa, [107]
early stages of, [104]
Omentum, great, [107]
layers of, [107]
peritoneal adhesions in adult, [131]
relation of, to transverse colon, transverse colon and duodenum, [129]
lesser, as part of ventral mesogastrium, [165]
divisions of, [172]
in Macacus, [176]
Omnivora, gastric diverticula of, [48]
Omphalo-mesenteric arteries, [64], [146]
artery, persistence of rudiments of, [65]
duct, [22]
veins, [146]
Ophidia, intestinal villi of, [195]
liver in, [144]
stomach of, [44], [46]
Oral pouches, [48]
Ornithorhynchus anatinus, ileo-colic junction and cæcum of, [204]
Orycteropus, ileo-colic junction and cæcum of, [208]