The real name of the backbone is the vertebral column.
The vertebral column, also commonly referred to as the spinal column or spine, is a crucial component of the axial skeleton in vertebrates. It's not just a single bone, but rather a series of individual bones called vertebrae, connected by intervertebral discs. This structure allows for flexibility and movement while providing vital protection to the spinal cord, which runs through a canal within the vertebral column.
Think of it like this:
- Vertebral Column: The overall structure, the "backbone"
- Vertebrae: Individual bones that make up the vertebral column
- Intervertebral Discs: Cushioning pads between the vertebrae
Here's a breakdown of the regions of the vertebral column:
| Region | Number of Vertebrae | Notes |
|---|---|---|
| Cervical | 7 | Located in the neck; allows for a wide range of motion |
| Thoracic | 12 | Connects to the ribs |
| Lumbar | 5 | Located in the lower back; bears the most weight |
| Sacral | 5 (fused) | Forms the posterior part of the pelvis |
| Coccygeal | 4 (fused) | Commonly known as the tailbone |
In summary, while "backbone" is a commonly used term, the more accurate and formal name for this essential structure is the vertebral column. It provides support, allows for movement, and protects the spinal cord.
