Which statement best describes the arachnoid mater?
A) It is the innermost meningeal layer.
B) It is a delicate, richly vascularized meningeal layer that is "cobwebby" in appearance.
C) It is a tough, inelastic membrane that covers the central nervous system.
D) It is involved with the formation of cerebrospinal fluid.

Question

Quizplus · Accepted Answer

The arachnoid mater is a delicate, thin, and filmy meningeal layer that has a "cobwebby" appearance due to its numerous fine threads and trabeculae. It is not the innermost layer and is not involved in the formation of cerebrospinal fluid. It is also not a tough, inelastic membrane.

Which Statement Best Describes the Arachnoid Mater