The spider web mesh under the arachnoid is called the:

1. It gives the layer its name. 2. It sits in the subarachnoid space. 3. Beneath the arachnoid is a thin filamentous mesh called the arachnoid trabeculae. 4. So the answer is the trabeculae. _Source: OpenStax 'Anatomy and Physiology 2e', Ch 13 'Anatomy of the Nervous System'_