The meninges have three layers called the dura mater, arachnoid mater, and pia mater. They are also separated by gaps or spaces in some areas. Both cranial and spinal meninges are broken down into ...

resulting in clot formation in the subdural space between the arachnoid and dural meningeal layers. A subdural haematoma is often associated with some underlying parenchymal (brain) injury, including ...