The white matter of the brain is "made up chiefly of '''nerve fibres''' arising from the nerve cells of the brain". And in the third layer "the white matter of the brain is divisible into three distinct classes of fibres: '''diverging''', '''comissural''', and '''associations''' fibres." | The white matter of the brain is "made up chiefly of '''nerve fibres''' arising from the nerve cells of the brain". And in the third layer "the white matter of the brain is divisible into three distinct classes of fibres: '''diverging''', '''comissural''', and '''associations''' fibres." |