What function do intervertebral discs serve in the spinal column?

Intervertebral discs play a crucial role in providing cushioning between the vertebrae in the spinal column. These discs are composed of a tough outer layer called the annulus fibrosus and a gel-like center known as the nucleus pulposus. This structure allows them to absorb shock and distribute load during various activities such as walking, running, and lifting. The cushioning effect is vital for protecting the vertebrae from mechanical stress, reducing the risk of injury, and ensuring smooth movement of the spine.

Additionally, while intervertebral discs do contribute to the overall flexibility of the spine, their primary function is to serve as a cushion, making option B the most accurate representation of their significance in spinal anatomy.