brain surface
- cortexOrgan's external tissue
- gyrusCerebral cortex ridge
- sulcusGroove in tissue
- foldsBends upon itself
- wrinklesSurface lines from folding
gray · matter · meninges · skull · cerebral · convolutions · lobes · membrane · dura · tissue · neurons · ridges · grooves · temporal · frontal · parietal · occipital · cranium
brain surfacewhite matter
Pale neural fiber tissue
basal ganglia · thalamus · hypothalamus · brain stem · ventricles