Answer:
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.
the inner layer is pia mater
the middle layer is the arachnoid
the tough outer layer is dura mater
Step-by-step explanation:
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