Question

question 12
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which of the following is the middle, spider - like layer of the meninges,
between the dura mater and pia mater.
subarachnoid space
pia mater
arachnoid mater
dura mater

Explanation:

The meninges have three layers. The dura mater is the outermost tough layer. The pia mater is the innermost delicate layer that closely covers the brain and spinal cord. The arachnoid mater is the middle layer. It has a spider - like (arachnoid means spider - like) appearance and is located between the dura mater and pia mater. The subarachnoid space is the space between the arachnoid mater and pia mater, not a layer.

Answer:

Arachnoid Mater