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What are meanings ? Name them....

What are meanings ? Name them.

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Besides the bony cranium , the brain is surrounded by three protective coats of connective tissue. These are known as meninges . The three meninges are :
(i) Innermost pia mater. (ii) Middle ararchnoid mater, and (iii) Outermost durameter.
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PRADEEP-NEURAL CONTROL AND CORRDINATION-Analytical Question With Answer
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  11. What are meanings ? Name them.

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