How does the composition of the components of the intervertebral disc relate to their function and why does this result in the nucleus pulposus bulging following section?
The annulus fibrosus is composed of fibrous tissue. Its function is to hold the adjacent vertebral bodies together and contain the nucleus pulposus. The nucleus pulposus is a relatively fluid filled gel cushion gel under pressure and so functions as a shock absorber between adjacent vertebrae. Sectioning of the disc removes the restriction of the annulosus fibrosus, allowing the nucleus pulses to bulge.