It has four regions: the cardia leads down from the esophagus; the fundus curves above it; the Body is the largest part; and the antrum narrows to join the duodenum at the pyloric valve.

• 人的胃分为四部分︰与食道相连的贲门;位于贲门上侧的膨出部胃底;胃体,也是容积最大的部分;在幽门处与十二指肠相连的狭窄部分。