The membranes that cover and protect the brain and spinal cord.

The meninges are made up of 3 layers. The outer layer is called the dura mater. The middle layer is called the arachnoid mater. The inner layer is called the pia mater. Together, the arachnoid mater and pia mater are called the leptomeninges.

Meninges is the plural of meninx.