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Ribs are the long curved bones that form the rib cage. True ribs have a connection to the sternum (1-7) while false ribs are connected to the preceding rib (7). True ribs are 1-7 ribs while false ribs are 8-10 because they connect to rib 7 on the anterior surfact. Floating ribs are ribs that do not connect on the anterior side of the sternum.
TheBlueFox

Seven pairs are called true ribs. Each rib is attached to the breastbone in the front and curves around to join on to one of the vertebrae that make up the backbone via a strip of costal cartilage.

There are three pairs of false ribs. These are attached to vertebrae but are not linked to the breastbone. Instead, each rib is attached to the rib above it by cartilage.

There are two pairs of floating ribs. These are attached only to the vertebrae of the backbone.

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