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下列关于脊柱的说法正确的是( )

单选题
2021-07-17 23:15
A、不与四肢骨相连接
B、由24块椎骨、l块骶骨和1块尾骨借骨连结构成
C、前纵韧带位于椎管前壁
D、后纵韧带位于椎管后壁
E、颈曲和腰曲凸向后,胸曲和骶曲凸向前
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正确答案
B

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