What is the primary function of the intervertebral discs?

The primary function of intervertebral discs is to absorb shock and maintain flexibility between the vertebrae. These discs act as cushions between the individual vertebrae in the spine, allowing for movement and flexibility when bending or twisting. They consist of a gel-like center called the nucleus pulposus surrounded by a tougher outer layer known as the annulus fibrosus. This design enables the discs to distribute pressure and absorb compressive forces that occur during activities like walking, running, and lifting. Additionally, their ability to provide flexibility helps to maintain a range of motion in the spine, supporting overall spinal health and function.