what is the outer meningeal layer of the spinal cord called? a. dura mater b. pia mater c. arachnoid d. subarachnoid
Pia mater. Pia mater (/ËpaÉª.É ËmeÉªtÉr/ or /ËpiË.É ËmÉËtÉr/), often referred to as simply the pia, is the delicate innermost layer of the meninges, the membranes surrounding the brain and spinal cord. Pia mater is medieval Latin meaning tender mother. The other two meningeal membranes are the dura mater and the arachnoid mater.