Answer :
Meninges are considered as the three-layer fibrous membranes collectively surrounding the brain and spinal cord.
The brain and spinal cord are shielded by three layers of membranes called meninges. The Pia mater is the thin inner layer. The arachnoid, a structure resembling a web filled with fluid, is the middle layer and protects the brain. The durable outer layer is referred to as the dura mater. Meninges and CSF's main purpose, according to conventional wisdom, is to protect the central nervous system (CNS).
This is primarily due to the meninges' ability to tightly anchor the central nervous system (CNS) to the nearby bones, preventing side-to-side movement and promoting stability. The CNS's delicate organs are shielded from trauma by the meninges, which act as a barrier of defense. It also has a large number of blood vessels that carry blood to the CNS tissue.
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