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VERTEBRAL JOINTS-INTERVERTEBRAL DISC

Anatomy-Spine

VERTEBRAL JOINTS-INTERVERTEBRAL DISC

1. Intervertebral disc is a secondary cartilagenous joint, its structure:
2. Growth of the vertebral bodies occurs in a ventral and lateral direction, hence the nucleus pulposus comes to lie at the back of the disc.
3. The nucleus pulposus accounts for 15% of the whole disc, 90% of which is water at birth. This reduced to 70% by old age.
4. The proteoglycan component of the nucleus pulposus is hydrophilic.
5. This helps to cushion and distribute the load on the spine.


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REFERENCES

1. Mcminn. (2003). Last's Anatomy. Elsevier Australia. ISBN:0729537528. Read it at Google Books - Find it at Amazon
2. Netter, F. H. (2019). Atlas of human anatomy. Philadelphia, PA: Elsevier.
3. Image: no reference available.

Ⓒ A. Manickam 2018

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