You searched for: “arachnoidal
arachnoidal
Of the nature of, or pertaining to, the arachnoid (like a spider or a cobweb).
This entry is located in the following unit: arachno-, arachn- + (page 2)
arachnoidea, arachnoidal
The middle of the three layers of the meninges or the membrances covering the brain and spinal cord.

Its smooth external surface is closely applied between two other meninges, the more superficial dura mater, while the inner roughened surface is separated from the pia mater by the subarachnoid space.

The delicate, spiderweb-like, or arachnoid layer, attached to the inside of the dura, surrounds the brain and spinal cord but does not line the brain down into its folds. In some locations the space is crossed by fine trabeculae.

This entry is located in the following unit: arachno-, arachn- + (page 2)
Word Entries containing the term: “arachnoidal
arachnoidal villi, arachnoid villi
In anatomy, numerous microscopic projections of the arachnoid membrane into some venous sinuses.

Villi are minute hairlike projections, or tiny finger-like or vascular projections, on the mucous membranes.