During an automobile accident, a person sustains a "broken neck" and after a small bony fr

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During an automobile accident, a person sustains a "broken neck" and after a small bony fragment is driven into his spinal cord. Form which of the following bones was this fragment most likely derived?

A.Atlas

B.Axis

C.Seventh cervical vertebrae

D.Sixth cervical vertebrae

E.Fifth cervical vertebrae

参考答案:

答案:Axis