What are the layers of the meninges from superficial to deep?

Answer 1

Meninges is the collective term fro the three membranes covering the brain and spinal cord. The meninges are composed of the
1) Dura

mater is the layer of meninges closest to the skull resting on top of the arachnoid membrane attached to the skull in several pints, the dura

mater is made up of a fibrous material that protect the brain like tight-fitting

cap. Because it is attached to the skull the dura

mater also prevents the brain from moving within the skull.
2) Arachnoid mater spider web like layer. Rest between the pia

mater and the dura

mater. The arachnoid membrane covers the brain loosely, a bit like a hairnet, like the pia

mater it too is impermeable to fluids. The arachnoid membrane also consists of long filaments that attach it to the pia

mater. In between the arachnoid membrane and the pia

mater is an area called the subarachnoid

space, which contains cerebrospinal

fluid. Because the arachnoid membrane is impermeable to fluid, it prevents the cerebrospinal

fluid-- which helps protect the brain from trauma to the skull -- from escaping.
3) Pia mater is the membrane closest to the brain. It is a delicate layer that adheres to the brain. It is soft and thin, and covers the brain and spinal cord like a layer of glue, following every curve and contour of the brain. It is impermeable to fluid and laced with a network of small blood vessels called capillaries that supply blood to the brain and spinal cord.

^ What they are trying to say is -

From Superficial to deep the meninges and their related spaces are as follows:

1 - Dura

mater

2 - Subdural

space

3 - Arachnoid mater

4 - Subarachnoid

space

5- Pia mater