San Francisco Chiropractor and Herniated Disc Doctor Comments:
The spine has 24 movable segments called vertebrae. There are 7 cervical, 12 thoracic, and 5 lumbar vertebrae. There is a fibrous pad in between each vertebrae called a spinal disc ( spinal disc anatomy ).
The spinal discs have two primary functions...they act as a ligament by holding the spinal vertebrae above, and the one below together. And, they also function as a shock absorber. The intervertebral discs have a gelatinous center called the nucleus pulposus, and a very strong fibrous exterior called the annulus fibrosis.
Spinal Discs are avascular...which means they have no blood vessels that connect directly to them. They exchange nutrients with the bloodstream through a process called imbibition, a pumping action involving spinal motion. This is how they stay hydrated and healthy.
When the vertebra lose their normal alignment...what we call a vertebral subluxation...they can get stuck and are unable to perform the pumping action on the disc, which can lead to abnormal wear and tear, disc degeneration...and even disc herniations.
You can't keep your facts straight. Above you say there are 24 vertebrae but on the next page (spinal disc anatomy) you say there are 23. Where is the veracity of what you are saying? Do ou know what you are talking about?