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何为纵隔,分部如何?

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2021-12-24 23:42
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正确答案

纵隔是左、右纵隔胸膜之间所有器官、结构和结缔组织的总称。其前界为胸骨,后界为脊柱胸段,两侧界为纵隔胸膜,向上达胸廓上口,向下至膈。通常以胸骨角至第4胸椎体下缘将纵隔分为上纵隔和下纵隔。下纵隔再以心包为界分为前前纵隔、中纵隔和后纵隔3部分。


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