Dura mater /ˈdjʊərə ˈmeɪtər/, or dura, is the outermost of the three layers of the meninges surrounding the brain and spinal cord. It is derived from mesoderm. The other two meningeal layers are the pia mater and the arachnoid mater. The dura surrounds the brain and the spinal cord and is responsible for keeping in the cerebrospinal fluid. The name dura mater is derived from the Latin "tough mother", a loan translation of Arabic umm al-dimagh as-safigah, literally thick mother of the brain, matrix of the brain. and is also referred to by the term "pachymeninx" (plural "pachymeninges"). The dura has been described as "tough and inflexible" and "leather-like".
Read more about Dura Mater: Layers and Functions, Drainage, Clinical Significance, Blood Supply, Innervation