EVERYDAY SCIENCE

Detailed explanation-1: -Three layers of membranes known as meninges protect the brain and spinal cord. The delicate inner layer is the pia mater. The middle layer is the arachnoid, a web-like structure filled with fluid that cushions the brain. The tough outer layer is called the dura mater.

Detailed explanation-2: -The space between the spinal dura mater and the periosteum of the vertebral column is called the epidural space. It is filled with loose connective and adipose tissues, and traversed by the anterior and posterior internal vertebral venous plexuses.

Detailed explanation-3: -Dura Mater The outermost mater of the meninges, the dura, is composed of two layers: the periosteal layer that lies closest to the calvarium and the meningeal layer that lies closest to the brain tissue. These together contribute to the dura being a thick, dense, fibrous membrane that is quite inelastic.

Detailed explanation-4: -Together, your meninges stabilize your brain, protect sensitive areas, and give support to nerves, blood vessels, lymphatics, and the cerebrospinal fluid found in your central nervous system. The dura mater is the outermost layer and is closest to the skull. It contains the periosteal layer and the meningeal layer.