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Select the correct option: 8th, 9th and 10th pairs of ribs articulate directly with the sternum.

1. Each rib is a flat thin bone and all the ribs are connected dorsally to the thoracic vertebrae and ventrally to the sternum.
2. There are seven pairs of vertebrosternal, three pairs of vertebrochondral and two pairs of vertebral ribs.
3. Each rib is a flat thin bone and all the ribs are connected dorsally to the thoracic vertebrae and ventrally to the sternum.
4. There are seven pairs of vertebrosternal, three pairs of vertebrochondral and two pairs of vertebral ribs.

Correct answer: There are seven pairs of vertebrosternal, three pairs of vertebrochondral and two pairs of vertebral ribs.

Solution

The statement is false because only the first seven pairs of ribs attach directly to the sternum. The 8th, 9th, and 10th pairs are vertebrochondral ribs, meaning they connect indirectly via the cartilage of the rib above.

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