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08. List and describe the three lavers that make up the meninges. Description Layer
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68.The meninges has three layers

  • Durameter
  • Arachnoid mater
  • Pia mater
Layer Description
Duramater
  • It is the outermost covering
  • The layer is hard and gives protection
  • It carries blood through vein like sinuses innthe brain and ensure adequate supply of blood
  • It covers the brain and spinal cord
Arachnoid mater
  • it is the second or middle layer of the meninges
  • It is formed with arachanoid villi
  • The main function of it is to transfer the CSF to the blood stream again
  • It looks like a spider web
  • Made of connective tissues
Pia mater
  • This is the innermost or the third layer of the brain
  • It forms the chloride plexus aling with ependyma
  • It covers the inner layer of the brain
  • Made of fibrous tissue
  • It has rich blood supply
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