olved in the coordination of voluntary muscle activity (skeletal muscles) ??? ??? ??? bone protects organs such as the brain, spinal cord, lungs, etc ??? ??? ??? cranium brain in encased in this ??? ??? ??? vertebral column spinal cord is encased in this ??? ??? ??? meninges 3 layers of connective tissue that surround the skull & spinal cord ??? ??? ??? dura mater tough, outer most layer, lines th