nucleus pulposus

The jelly-like substance in the middle of the spinal disc which is a remnant of the notochord. Every claim on this page comes from the Leumas anatomy graph and carries its source.

What the nucleus pulposus is

The jelly-like substance in the middle of the spinal disc which is a remnant of the notochord. The atlas records it as a organ at the organ scale in the human body.

Where the nucleus pulposus is

It sits within the skeletal system. Not positioned individually. Drawn inside the structure this dataset says contains it — the containment is asserted, the exact spot within it is not.

What the nucleus pulposus connects to

The atlas records 7 typed relationships for it, across 5 kinds of connection. part of intervertebral disk.

Supply and innervation

This dataset asserts no arterial supply, venous drainage or innervation for the nucleus pulposus. Only a minority of structures carry those edges here, so an empty answer means nothing has been recorded — not that there is nothing to record.

Also called

Also recorded as nucleus pulposus (diskus intervertebralis), pulpy nucleus, nucleus propulsus, nucleus propulsus of intervertebral disk and nucleus pulposus of intervertebral disk. Searching any of those names reaches this page.

Source

Uberon multi-species anatomy ontology (Mungall et al.), CC BY 4.0. Term UBERON:0002242, version 2026-06-19, retrieved 2026-08-24. Licence: CC-BY-4.0.

• Part of: intervertebral disk.
• A kind of: anatomical structure, connective tissue and organ.
• contains: collection of collagen fibrils.
• contributes to morphology of: intervertebral disk.
• Develops from: notochord.

Questions

Where is the nucleus pulposus?

It sits within the skeletal system. Not positioned individually. Drawn inside the structure this dataset says contains it — the containment is asserted, the exact spot within it is not.

What does the nucleus pulposus connect to?

Part of: intervertebral disk.

Is the nucleus pulposus the same in other species?

Leumas holds the same relationship vocabulary for every species it carries, so where another dataset records this structure you can put the two side by side on /compare.