Question: what are the 3 layers of the meninges?
Evidence: 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.
Answer: dura mater
arachnoid mater
the pia mater
pia mater
the arachnoid mater