This spinal area lies just outside the dura mater, and is a tough membrane that encases the spinal cord and the system that allows cerebrospinal fluid to circulate. The procedure was initially viewed ...

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 ...

Dear W.M.: CSF surrounds and supports the brain and spinal cord. The meninges normally form a fluid-proof barrier, but if the ...