结构高低级

大体解剖 > 消化系统 > 胃 > [胃壁]肌层 > 幽门括约肌

下层结构


翻译

描述

At the pylorus the circular fibers of the muscular layer are most abundant, and are aggregated into a circular ring, which projects into the lumen, and forms, with the fold of mucous membrane covering its surface, the pyloric valve.


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