vertebra

vertebra
[ˈvəːtɪbrə]
(pl. vertebrae -breɪ, -briː)

each of the series of small bones forming the backbone, having several projections for articulation and muscle attachment, and a hole through which the spinal cord passes
椎骨；脊椎
In the human spine (or vertebral column) there are seven cervical vertebrae (in the neck), twelve thoracic vertebrae (to which the ribs are attached), and five lumbar vertebrae (in the lower back). In addition, five fused vertebrae form the sacrum, and four the coccyx

派生
vertebral
adjective
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