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what surrounds the spinal cord and brain what surrounds the spinal cord and is continuous with the brain membrane surrounding the spinal cord and brain what surrounds the spinal cord as well as the brain what protective membrane surrounds the brain and spinal cord what protective structure surrounds the brain and spinal cord what protective layer surrounds the brain and spinal cord what is the membrane that surrounds the brain and spinal cord called what connects the brain with the spinal cord what is the relationship between the brain and the spinal cord
