Technical Terms - Well Explained
- Disks, spinal
The disks between individual vertebrae serve as a kind of buffer. They do not fulfill this task on their own, though, as the double "S" formed by the spine acts as a shock absorber, too. The individual vertebral disks consist of a rather solid but nevertheless elastic outer fibrous ring and a soft, viscous gelatinous nucleus which itself is not supplied with blood. Depending on the age and condition of the disk, this soft center contains up to 90 percent water and its fibers can store up to 1,000 times their mass of moisture, soaking it up like a sponge.