abdomen abomasum anus appendix bay window beerbelly belly blind gut bowels brain breadbasket cecum colon craw crop diaphragm duodenum embonpoint endocardium entrails first stomach foregut giblets gizzard gullet gut guts heart hindgut honeycomb stomach innards inner mechanism insides internals intestine inwards jejunum kidney large intestine liver liver and lights lung manyplies maw midgut midriff omasum paunch perineum pot potbelly potgut psalterium pump pusgut pylorus rectum rennet bag reticulum rumen second stomach small intestine spare tire spleen stomach swagbelly third stomach ticker tripes tum-tum tummy underbelly ventripotence vermiform appendix viscera vitals works