(a) What is a true rib? A false rib? (b) Is a floating rib a true rib or a false rib? (c) Why are floating ribs easily broken
There are 12 pairs of ribs.
The first through seventh pairs have a direct anterior attachment to the sternum by a strip of hyaline cartilage called "costal cartilage." These ribs are called "true ribs." Another name for them is vertebrosternal ribs.
This solution distinguishes the differences between regular and floating ribs.