The primary difference between true ribs and false ribs lies in how they connect to the sternum (breastbone).
True Ribs
-
Definition: The first seven pairs of ribs (ribs 1-7) are classified as true ribs. These ribs are directly attached to the sternum via their own individual costal cartilages. This direct connection provides strong support and stability to the rib cage.
-
Attachment: Each true rib has its own cartilage that connects directly to the sternum.
-
Characteristics: They are stronger and more rigidly attached than false ribs.
False Ribs
-
Definition: Ribs 8-10 are considered false ribs. They do not connect directly to the sternum. Instead, their costal cartilages connect to the cartilage of the rib above them, which ultimately connects to the sternum. This indirect connection makes them more flexible than true ribs.
-
Attachment: They attach indirectly to the sternum through a shared cartilage connection.
-
Characteristics: They are less rigidly attached to the rib cage, allowing for greater flexibility.
In Summary: True ribs connect directly to the sternum, while false ribs connect indirectly through shared cartilage. The difference in attachment leads to variations in rigidity and flexibility. Both are integral components of the rib cage, providing protection for internal organs while allowing for breathing movements.
