pyloric stenosis,

1十二指肠空肠曲duodenojejunalflexure2胃幽门窦pyloricantrumof
pyloricantrumofstomach5十二指肠上部superiorpartofduodenum6胃小弯
p>十二指肠溃疡伴幽门梗阻(gastroduodenal ulcer with pyloric
二,胃
外纵三层平滑肌构成,环形平滑肌在幽门处增厚,形成幽门括约肌 pyloric