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digestive tract
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digestive tract
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医学
消化管
释
digestive tract
消化管壁的一般组织结构
消化管是从口腔至肛门的连续性管道,依次分为口腔、咽、食管、胃、小肠和大肠。除口腔与咽外,消化管各段的管壁均可自内向外分为黏膜、黏膜下层、肌层与外膜,这四层称为消化管的基本结构。
Biology
digestive tract
消化管
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