What is the primary function of the intervertebral discs?

The primary function of the intervertebral discs is to absorb shock and allow movement. These fibrocartilaginous structures are located between each pair of vertebrae in the spine, acting as cushions that help to absorb the impact during activities such as walking, running, or jumping. This shock absorption is crucial for protecting the vertebrae and maintaining spinal integrity.

Additionally, intervertebral discs contribute to the flexibility of the spinal column, enabling a range of movements such as bending and twisting. Their structure, which includes a gel-like center known as the nucleus pulposus surrounded by a tougher outer layer called the annulus fibrosus, facilitates both the absorption of forces and the mobility of the spine.

While the intervertebral discs do interact with other aspects of spinal anatomy, such as providing some structural connection between vertebrae, their primary role is focused on shock absorption and facilitating movement.