Protection of the Brain & Spinal Cord.
What lies outside of the brain to protect it?
(3 layers called Meninges)
Outside of the Brain; Piamater,
outside of the Piamater is called "arachnoid mater".
outside the "arachnoid mater" is called the.."Dura mater".(meningial blood vessels)
*Piamater --> Arachnoid mater --> Dura mater (PAD)