这个词是什么意思？
A set of twelve curved bones which connect to the vertebral column posteriorly, and terminate anteriorly as costal cartilage. Together, they form a protective cage around the internal thoracic organs.
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D012272 · MeSH 2026。
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