<Li> <P> Dura mater (spinal section) </P> </Li> <P> Dura mater (spinal section) </P> <Li> <P> Diagrammatic representation of a section across the top of the skull, showing the membranes of the brain, etc . </P> </Li> <P> Diagrammatic representation of a section across the top of the skull, showing the membranes of the brain, etc . </P>

Space that lies between the dura mater and the periosteum of the vertebrae