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ribs

ribs

/ribz/

Noun

Curved bones that make up the external structure of the chest. There are 12 pairs of ribs, The first 10 attach to the spinal column posteriorly. Ribs 1 through 7, called the true ribs, curve around to the anterior side of the chest and attach directly to the sternum. The remaining 5 are known as false ribs, as they do not attach directly to the sternum. Ribs 8 - 10 attach to the rib above them. Ribs 11 and 12 are only attached to the spinal column, and are also known as floating ribs. Cartilage is found between the true ribs and the sternum. Covering the anterior top two sets of ribs are the clavicles; posteriorly the scapulae cover much of the rib cage.