Written by the Fiveable Content Team • Last updated August 2025
Written by the Fiveable Content Team • Last updated August 2025
Definition
The nucleus pulposus is the inner core of the vertebral disc, composed of a jelly-like material that provides the disc with its elasticity and ability to absorb shock. It is crucial for the normal function and flexibility of the vertebral column.
Vertebral Disc: A disc-shaped structure situated between each vertebra in the spine, consisting of an outer fibrous ring (annulus fibrosus) and an inner gel-like core (nucleus pulposus) that serves to absorb shock and provide flexibility.
The outer layer of a vertebral disc made of tough fibrocartilage that encases and protects the soft, jelly-like nucleus pulposus.
Intervertebral Disc Degeneration: A condition characterized by the breakdown or degeneration of the intervertebral discs, leading to pain, decreased flexibility, and potential nerve compression