The typical rib bone is not just one single shape; it consists of three main parts, each with its own distinct form.
Typical Rib Bone Structure
The typical rib is composed of three primary sections:
- Head: The head of the rib is wedge-shaped. It also contains two articular facets. These facets are separated by a wedge of bone.
- One facet connects with the numerically corresponding vertebra.
- The other facet articulates with the vertebra located directly above.
- Neck: This part connects the head to the body of the rib.
- Body: This is the main, curved portion of the rib.
Table Summarizing Rib Bone Shapes
| Rib Section | Shape Description |
|---|---|
| Head | Wedge-shaped |
| Neck | Connects head to body, shape varies |
| Body | Curved |
Therefore, while the overall shape of a rib is curved, its head has a distinct wedge shape due to its structure for articulating with the vertebrae.
