The spine is divided into three main segments: the cervical, thoracic, and lumbar regions.
Spine Segmentation
The human spine, also known as the vertebral column, is a crucial part of the skeletal system, providing support, flexibility, and protection for the spinal cord. The spine is divided into three primary sections, each with unique characteristics:
Cervical Spine
- Location: The upper part of the spine, located in the neck region.
- Vertebrae: Consists of seven vertebrae, labeled C1 through C7.
- Function: Supports the head, enables neck movement, and protects the spinal cord in this area.
Thoracic Spine
- Location: The middle portion of the spine, located in the chest area.
- Vertebrae: Comprises 12 vertebrae, labeled T1 through T12.
- Function: Provides support for the rib cage, and offers protection for vital organs in the chest, and facilitates movements in the upper back.
Lumbar Spine
- Location: The lower part of the spine, located in the lower back.
- Vertebrae: Consists of five vertebrae, labeled L1 through L5.
- Function: Bears the majority of the body’s weight, supports movement in the lower back, and provides support for the abdomen.
| Region | Location | Number of Vertebrae | Key Functions |
|---|---|---|---|
| Cervical | Neck | 7 (C1-C7) | Supports the head and facilitates neck movement. |
| Thoracic | Chest | 12 (T1-T12) | Supports the rib cage and protects vital organs in the chest. |
| Lumbar | Lower Back | 5 (L1-L5) | Bears the majority of body weight and facilitates lower back movement. |
These segments, working together, provide the spine with the ability to support the body and allow for a wide range of movements. Understanding the specific divisions of the spine is vital for addressing health issues and injuries effectively.
