Final answer:
The layer of meninges that is composed of a thin layer of delicate areolar CT is the arachnoid mater. It lies between the dura mater and the pia mater, and its thin fibrous tissue follows every contour of the brain surface.
Step-by-step explanation:
The layer of meninges that is composed of a thin layer of delicate areolar CT is the arachnoid mater. The arachnoid mater is a web-like membrane that forms a loose sac around the central nervous system (CNS).
It lies between the dura mater and the pia mater, and its thin fibrous tissue follows every contour of the brain surface. The layer of meninges that is composed of a thin layer of delicate areolar CT is the arachnoid mater. It lies between the dura mater and the pia mater, and its thin fibrous tissue follows every contour of the brain surface.