Question

36 what is the outermost membrane surrounding the brain and spinal cord? multiple choice pia mater arachnoid mater dura mater what isda mater

Explanation:

The meninges are the membranes surrounding the brain and spinal cord. The dura mater is the outermost layer. The pia mater is the innermost layer, closely adhering to the brain and spinal cord. The arachnoid mater is in the middle. There is no "what isda mater" in anatomical terms.

Answer:

dura mater