The head is not any more mobile on the spinal column than any other two vertebrae are on each ... This gave greater leverage for muscles and permitted greater muscle range of movement. Figure In ...
Medically reviewed by Sameena Zahoor, MDMedically reviewed by Sameena Zahoor, MD The meninges of the brain and spinal cord are three layers of membranes: the dura mater, arachnoid mater ...