Vertebrae in which region are fused in adults?
A)lumbar vertebrae
B)thoracic vertebrae
C)sacral vertebrae
D)cervical vertebrae

Name: Vertebrae in which region are fused in adults? A)lumbar vertebrae B)thoracic vertebrae C)sacral vertebrae D)cervical vertebrae
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Question

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The sacral vertebrae are fused in adults to form the sacrum, which is a triangular bone at the base of the spine. The lumbar, thoracic, and cervical vertebrae are not fused and retain their separate identities in the adult spine.

Vertebrae in Which Region Are Fused in Adults