Final answer:
The intervertebral discs are essential for allowing limited spinal movement, acting as cushions to absorb shocks during movement, and binding vertebrae together.
Step-by-step explanation:
The function of the intervertebral discs is multi-faceted. They serve as fibrocartilaginous pads that fill the gaps between adjacent vertebral bodies, thus playing a crucial role in the structure and function of the vertebral column. These discs are pivotal in allowing for limited spinal movement, acting as a cushion to absorb shock during activities like walking and running, and binding the vertebrae together. Each intervertebral disc is made of two parts; the anulus fibrosus, which is a tough outer layer, and the nucleus pulposus, a gel-like center that has a high water content. This design helps the intervertebral discs to resist compression, essential for weight-bearing activities.
They are composed of a tough anulus fibrosus and a gel-like nucleus pulposus, contributing to 25% of body height and essential for weight bearing. As people age, the discs harden, which can impact shock absorption and flexibility.