How many pairs of ribs articulate directly with the sternum


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How many pairs of ribs articulate directly with the sternum?

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There are 12 pairs of ribs. Each rib is a curved, flattened bone that contributes to the wall of the thorax. The ribs articulate posteriorly with the T1-T12 thoracic vertebrae, and mist attach anteriorly via their costal cartilages to the sternum.

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