GROSS ANATOMY

Detailed explanation-1: -The spinal cord and its meningeal coverings (dura mater, arachnoid mater, and pia mater) lie within the vertebral canal, a hollow space that runs inside the spinal vertebrae.

Detailed explanation-2: -The epidural space is a space between your skull and dura mater and the dura mater of your spinal cord and the bones of your vertebral column.

Detailed explanation-3: -Subarachnoid space-Space between the arachnoid mater and the innermost covering of the spinal cord. It contains Cerebrospinal fluid.

Detailed explanation-4: -Cerebrospinal fluid (CSF, shown in blue) is made by tissue that lines the ventricles (hollow spaces) in the brain. It flows in and around the brain and spinal cord to help cushion them from injury and provide nutrients.

Detailed explanation-5: -A cervical vertebra. (Vertebral foramen is the large hole at the center.) The vertebral foramen begins at cervical vertebra #1 (C1 or atlas) and continues inferior to lumbar vertebra #5 (L5). The vertebral foramen houses the spinal cord and its meninges.