THORAX ABDOMEN AND PELVIS

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 meninges is a layered unit of membranous connective tissue that covers the brain and spinal cord. They envelope the central nervous system (CNS) structures so that they are not in direct contact with the bones of the spinal column or skull.

Detailed explanation-3: -The brain and spinal cord are covered and protected by 3 layers of tissue (membranes) called the meninges: dura mater – thickest outer membrane. arachnoid layer – middle, thin membrane. pia mater – inner, thin membrane.