How many pairs of ribs articulate directly with the sternum?
In humans, there are typically 12 pairs of ribs. The first seven pairs are directly connected to the sternum by costal cartilages and are referred to as true ribs. The 8th, 9th, and 10th pairs, known as false ribs, do not attach directly to the sternum; instead, they are indirectly connected through the costal cartilage of the 7th rib. This anatomical arrangement raises an interesting question: how many pairs of ribs articulate directly with the sternum?
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