![cover image](https://wikiwandv2-19431.kxcdn.com/_next/image?url=https://upload.wikimedia.org/wikipedia/commons/thumb/c/c0/Medulla_spinalis_-_Substantia_grisea_-_English.svg/640px-Medulla_spinalis_-_Substantia_grisea_-_English.svg.png&w=640&q=50)
Rexed laminae
Layers of grey matter in the spinal cord / From Wikipedia, the free encyclopedia
The Rexed laminae (singular: Rexed lamina) comprise a system of ten layers of grey matter (I–X), identified in the early 1950s by Bror Rexed to label portions of the grey columns of the spinal cord.[1][2]
![Thumb image](http://upload.wikimedia.org/wikipedia/commons/thumb/c/c0/Medulla_spinalis_-_Substantia_grisea_-_English.svg/640px-Medulla_spinalis_-_Substantia_grisea_-_English.svg.png)
![Thumb image](http://upload.wikimedia.org/wikipedia/commons/thumb/e/ed/Spinalcord_trirev_rexedlamina.svg/640px-Spinalcord_trirev_rexedlamina.svg.png)
![](http://upload.wikimedia.org/wikipedia/commons/thumb/9/99/Wiktionary-logo-en-v2.svg/40px-Wiktionary-logo-en-v2.svg.png)
Look up Rexed lamina in Wiktionary, the free dictionary.
Similar to Brodmann areas, they are defined by their cellular structure rather than by their location, but the location still remains reasonably consistent.[citation needed]