Cortical folding

• what is are gyri?

  bumps, protruding rounds surfaces - folds
• what is are sulci?


  valleys between gyri or enfolded regions that appears as surface lines
• what are fissures?


  very deep sulcus
• what is grey matter?


  neurones cell body
• what are the major sulci?


  central (rolandic) sulcus

  Sylvia (lateral) fissure