Which is the thick, tough outermost layer of the meninges?

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Multiple Choice

Which is the thick, tough outermost layer of the meninges?

Explanation:
The thick, tough outermost layer of the meninges is the dura mater. It serves as the sturdy protective envelope around the brain and spinal cord, much more robust than the other meningeal layers. Just beneath it is the arachnoid mater, a delicate, web-like layer that forms the subarachnoid space where cerebrospinal fluid flows. Inside, the pia mater is a thin membrane that tightly adheres to the brain and spinal cord surfaces. The visceral pleura is a pleural membrane around the lungs and is not part of the meninges.

The thick, tough outermost layer of the meninges is the dura mater. It serves as the sturdy protective envelope around the brain and spinal cord, much more robust than the other meningeal layers. Just beneath it is the arachnoid mater, a delicate, web-like layer that forms the subarachnoid space where cerebrospinal fluid flows. Inside, the pia mater is a thin membrane that tightly adheres to the brain and spinal cord surfaces. The visceral pleura is a pleural membrane around the lungs and is not part of the meninges.

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