Human ribs are composed of two main materials: bone and cartilage.
Components of the Ribs
The ribs themselves are primarily made of bone, providing the main structural support for the chest cavity. However, the connection to the sternum (breastbone) is not direct bone-to-bone. Instead, it involves specialized cartilage, specifically called costal cartilage.
Bone Structure
- The bony part of the rib is hard and rigid.
- It protects the organs within the chest cavity, like the heart and lungs.
Cartilage Structure
- Costal cartilage is a flexible connective tissue.
- It connects the ribs to the sternum.
- The cartilage allows for movement and flexibility of the rib cage during breathing.
| Component | Material | Function |
|---|---|---|
| Rib (Body) | Bone | Structural support and protection |
| Costal Cartilage | Cartilage | Connects ribs to the sternum, providing flexibility |
In summary, while the main part of the ribs is bone, the inclusion of costal cartilage is crucial for the rib cage's overall function, enabling breathing and protecting vital organs.
