human stomach model 27 positions displayed, stomach
6胆囊gallbladder 7幽门pylorus 8左内叶left medial lobe 9左外
pharynx 咽 ues upper esophagus sphincter 上食道括约肌 pylorus
by hypertrophy of the circular muscle fibers of the pylorus
presentation on theme: "消化系统疾病 diseases of