Definition: The three thin layers of tissue that cover and protect the brain and spinal cord.Cancer.govPatient

Anatomy of the brain, showing the cerebrum, cerebellum, brain stem, and other parts of the brain.meningesLas tres capas delgadas de tejido que cubren y protegen el cerebro y la m├ędula espinal.Cancer.govPatient Date last modified: 2010-10-21