LES主要作用是A.防止十二指肠内溶物反流人胃B.防止咽部食物呛入气管C.防止胃内容物反流人食管D.帮助食管蠕动,使其顺利进入胃内E.使食...

作者: rantiku 人气: - 评论: 0
问题 LES主要作用是
选项 A.防止十二指肠内溶物反流人胃 B.防止咽部食物呛入气管 C.防止胃内容物反流人食管 D.帮助食管蠕动,使其顺利进入胃内 E.使食物由胃体进入胃窦
答案 C
解析

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