The arachnoid trabeculae  are delicate strands of connective tissue that loosely connect the two innermost layers of the meninges – the arachnoid mater and the pia mater. They are found within the subarachnoid space where cerebrospinal fluid is also found. Embryologically, the trabeculae are the remnants of the common precursor that forms both the arachnoid and pial layers of the meninges.

This definition incorporates text from the wikipedia website - Wikipedia: The free encyclopedia. (2004, July 22). FL: Wikimedia Foundation, Inc. Retrieved August 10, 2004, from


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