Meninges

In anatomy, the meninges (; meninx ; ) are protective membranes that cover the brain and spinal cord. In mammals, three meninges have been clearly identified: the dura mater, the arachnoid mater, and the pia mater. Each layer has its own molecularly distinct type of fibroblasts. The meninges act as a physical and immunological protective barrier for the brain and spinal cord, shielding the central nervous system (CNS) from injury. They anchor and support the tissues of the CNS, and provide containment for cerebrospinal fluid (CSF) and the arteries and veins that supply blood to the brain and s

the outermost layer of meninges

weblike middle layer of the three meninges

delicate innermost layer of the meninges, the membranes surrounding the brain and spinal cord

structure in the ventricles of the brain

Part of the meningeal layer of the dura mater

vertebrate brain structure separating the cerebellum from the occipital lobes

Protrusions of the arachnoid mater for returning cerebrospinal fluid to circulation

potential space between the dura mater and ligamentum flavum

subarachnoid cistern beneath the fourth ventricle

skull anatomy

opening in the brain filled with cerebrospinal fluid

anatomical region

fibrous tissue supporting the spinal cord

dura mater pouch

Proposed fourth meningeal layer

neurosurgical procedure performed on the spinal cord

Subarachnoid cistern above and in front of the pons

roof of sella turcica

Part of the membranes around the brain

potential space between the arachnoid and dura maters