The spine has three main parts:
- The cervical spine. This is composed of 7 cervical vertebrae.
- The thoracic spine. This is composed of 12 thoracic vertebrae.
- The lumbar spine. This is composed of 5 lumbar vertebrae.Another small part is called the sacrum which is part of the pelvis
The vertebrae are bones.Each vertebrae, in turn, is made of the following parts:
- The body. This part bears most of the weight. It includes the centrum and a posterior arch (also called a neural arch).
- The fibrous discs. These separate the vertebrae from other vertebrae. They are also called intervertebral discs.
- Two pedicles.
- Two laminae. These attach the ligaments of the spine.
- Seven processes. There are two types: The spinous processes. This is the bone humans feel when they run their hands down their back. The paired transverse processes. These run 90 degrees from the spinous process. They attach the back muscles
- Four facet joints – in two pairs. These help give the spine stability.
Disclaimer. This blog does not constitute medical advice.
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