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Leptomeninges

Etymology:

Definition:

Gr. leptós: “thin” + Gr. mêninx: “membrane, like of the eye, brain, or eardrum”

The innermost layers of the meninges that protect the brain (the pia mater and the arachnoid), which are relatively thinner membranes when compared to the outermost layer, the dura mater.

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