Concept
Version 18
Created by Boundless
Cerebral Cortex
Sulci and gyri
As depicted in this diagram of brain structures, sulci are the "valleys" and gyri are the "peaks" in the folds of the brain.
Source
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"Blausen_0115_BrainStructures.png."
https://en.wikipedia.org/wiki/Sulcus_(neuroanatomy)%23/media/File:Blausen_0115_BrainStructures.png
Wikipedia
CC BY 3.0.