Structure of the Back
The back has three primary parts, which are:
The spine is one of the most important body parts as it is the foundation of the body to support our body’s weight. The spine comprises of multiple bones, called vertebrae, stacked together from the neck (cervical area) to the waist (lumbar area). Doctors often refer to vertebrae by sequential numbering of the area the vertebrae is located in:
- The cervical spine section consists of 7 vertebral bones (known as C1-C7).
- The thoracic spine section consists of 12 vertebral bones (known as T1-T12).
- The lumbar spine section consists of 5 vertebral bones (known as L1-L5). This area is the most location for back pain as it supports the upper body weight.
- The sacral spine section consists of 5 vertebral bones (known as S1-S5) which are fused together to form the coccyx bone (also known as tailbone).
Picture 1 http://en.wikipedia.org/wiki/Spinal_cord
Picture 2 http://th.wikipedia.org/wiki/กระดูกสันหลัง
2. Back muscles
The muscles of the back are attached to the spine by connecting tendons and ligaments.
3. Spinal nerves
In the cavity of the spine, there are 31 pairs of spinal nerves to carry sensations from different parts of the body to the brain, and to carry instructions from the brain to the organs and parts of the body.