Which is the outermost layer of the meninges of the central nervous system?

Meningitis affects the dura mater, as it is an inflammation of the meninges, which includes the dura mater as the outermost layer of the membranes protecting the brain and spinal cord; therefore, when someone has meningitis, the dura mater is one of the structures that can be affected by the inflammation.

My sister died of spinal meningitis before her third birthday. It was devastating to our family.

DrO, dura means strong (durable), Pia means delicate?

DrO, and arachnoid because it looks like a spider's web?