Written by the Fiveable Content Team • Last updated September 2025
Written by the Fiveable Content Team • Last updated September 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.
Related terms
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