The annulus fibrosis and nucleus pulposus are part of which structure?

The annulus fibrosus and nucleus pulposus are integral components of intervertebral discs. The annulus fibrosus is the tough, outer layer of the disc, made up of concentric rings of collagen fibers that provide stability and support. In contrast, the nucleus pulposus is the gel-like central core of the disc, which acts as a cushion and absorbs shock between the vertebrae during movement.

Intervertebral discs serve several critical functions, including maintaining proper spinal alignment, allowing flexibility and movement between adjacent vertebrae, and distributing loads during various activities. Understanding the structure and function of these components is essential for comprehending spinal mechanics and the potential for injury or degeneration in the context of physical training such as Pilates.