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Write a note on meninges of Brain. - Biology

Answer in Brief

Write a note on meninges of Brain.

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Meninges are the protective membranes surrounding the brain and spinal cord. They are as follows:

  1. Dura mater: It is the outermost tough, non-vascular, thick and fibrous meninx and is attached to the inner side of the cranium. Sub-dural space filled with serous fluid is present between dura mater and arachnoid mater. 
  2. Arachnoid mater: It is the middle, thin and non-vascular layer of connective tissue having web like appearance. Sub-arachnoid space is present between arachnoid mater and pia mater. It is filled with Cerebrospinal fluid (CSF). 
  3. Pia mater: It is the innermost delicate, highly vascular membrane. It lies in close contact with the CNS.
Concept: Human Nervous System
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