Name the three meninges. In which group of animals do you find all of them?
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The meninges are the three membranes that envelop the brain and spinal cord. Mammals have all three layers present.
i. Dura Mater
The dura mater is the most superior of the meningeal layers. It is hard and tough membrane that is used to protect.
ii. Arachnoid Mater
The arachnoid or arachnoid mater is the middle layer of the meninges. In some areas, it projects into the sinuses formed by the dura mater.
iii. Pia Mater
The pia mater is the innermost layer of the meninges. Unlike the other layers, this tissue adheres closely to the brain.
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