Which option lists the protective cranial layers from outermost to innermost with the given phrasing?

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Multiple Choice

Which option lists the protective cranial layers from outermost to innermost with the given phrasing?

The main idea is the arrangement of the protective layers from outside to inside: skull, dura mater, arachnoid mater, CSF in the subarachnoid space, and then pia mater. The skull sits outside as the protective bone. Beneath it, the dura mater is the tough outer meninx. The next layer is the arachnoid mater, which forms a delicate covering over the brain. CSF flows in the subarachnoid space between the arachnoid and the pia mater, providing cushioning. The pia mater is the innermost layer, directly adherent to the brain tissue. The sequence that lists skull, dura mater, arachnoid mater, CSF, and then pia mater matches this spatial relationship, whereas the other options misplace CSF or mix up the order of the layers.

The main idea is the arrangement of the protective layers from outside to inside: skull, dura mater, arachnoid mater, CSF in the subarachnoid space, and then pia mater. The skull sits outside as the protective bone. Beneath it, the dura mater is the tough outer meninx. The next layer is the arachnoid mater, which forms a delicate covering over the brain. CSF flows in the subarachnoid space between the arachnoid and the pia mater, providing cushioning. The pia mater is the innermost layer, directly adherent to the brain tissue. The sequence that lists skull, dura mater, arachnoid mater, CSF, and then pia mater matches this spatial relationship, whereas the other options misplace CSF or mix up the order of the layers.

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