Yes, rib 12 is a false rib, specifically a floating rib. False ribs are the bottom five ribs, including ribs 8 through 12, which do not directly connect to the sternum (breastbone). The floating ribs (ribs 11 and 12) only attach to the vertebral column (backbone) and lack any anterior connection. They are considered "floating" because they are not connected to any other bone or cartilage in the front.
In summary, while the top seven ribs are known as true ribs, connecting directly to the sternum, the remaining ribs are classified as false ribs due to their different articulation. Ribs 8-10 attach to the sternum indirectly through cartilage, while ribs 11 and 12 are floating ribs, lacking any anterior attachment.
