The innermost membrane that covers the brain is
A
Pleura
B
Duramater
C
Pia mater
D
Arachnoid membrane
Correct Answer: Pia mater
The pia mater is the innermost layer of meninges. This thin, delicate membrane is tightly bound to the surface of the brain and spinal cord and cannot be dissected away without damaging the surface. Meningiomas are tumors of the nerve tissue covering the brain and spinal cord.