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Comparison of Cranial and
Spinal Meninges |
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| Cranial | Spinal | |
| Epidural Space | Potential Space: Between periosteum and skull | Real Space: Between dura and vertebra periosteum |
| Dura | Double Layered: Attached to inner skull surface | Single Layer: Suspended in vertebral canal |
| Subdural Space | Potential Space | Potential Space |
| Arachnoid | Attached to inner surface of dura | Attached to inner surface of dura |
| Subarachnoid Space | Real Space - CSF | Real Space - CSF |
| Pia Mater | Attached to CNS surface | Attached to CNS surface - expanded as Denticulate Ligaments |