Venous drainage of the stomach in the domestic rabbit (Oryctolagus cuniculus f. domestica, breed large Chinchilla) and the domestic cat (Felis catus L. f. domestica)

Two basic patterns of venous drainage of the stomach were found in rabbits. In the first, which is highly prevalent (27 cases - 90.0%), the v. gastroe piploica dextra is present while no such vein is present in the second one. Other venous channels are represented by the v. gastrica sinistra and by t ributaries of the v. lienalis. In cats there are also two basic patterns of the stomach venous drainage. The fi:rst highly prevalent type without the v. gastroepiploica dextra was found in 23 cases (76.0%); in the second type this vein was present. In rabbits the v. gastroepiploica sinistra was obse rved in 25 cases (82.5%), in cats in only two cases (6.6%). The v. gastroep iploica dextra in the rabbit is usually a tributary of the v. portae, while in cats it is a tributary of the v. lienalis. In ten rabbits (33.3%) there was a venous arch around the curvatura ventriculi major, while in cats it was absent. The great difference in the stomach venous pattern in rabbits a nd cats can be explained by the different zoological position of these two kinds of animals.