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meninges of brain
outermost meninx covering the brain, composed of tough fibrous connective tissue
innermost meninx covering the brain, delicate and highly vascular
structures intstrumental in returning cerebrospinal fluid to venous blood in dural sinuses
structure that forms cerebrospinal fluid
middle meninx, like a cobweb in structure
its outer layer forms periosteum of skull
cerebrospinal fluid flows from 4th ventricle into central canal of spinal cord and this space, surrounding the brain and spinal cord