pyloric antrum EFO:0002555 antrum of stomach galen:PyloricAntrum GAID:332 MESH:D011706 BTO:0001732 MA:0001624 NCIT:C12259 Wikipedia:Pyloric_antrum stomach pyloric antrum UMLS:C0034193 antrum EMAPA:17891 FMA:14579 SCTID:362142001 The area at the bottom of the stomach on the caudal side of the pyloric canal that contains gastrin-producing G cells, which stimulate acid production, and the luminal pH-sensitive population of somatostatin-producing D cells. zone of stomach