An anesthetic injected into the epidural space around the spine, often used in labor and delivery.
External to the dura mater.
On or above the outer coat of brain or spinal cord.
On the outside of the dura mater.
Outside the dura mater, the outermost membranous covering of the brain and spinal cord; also called extradural.
On or over the dura mater (the outermost of the three membranes covering the brain and spinal cord). The epidural space is the space between the dura mater of the spinal cord and the vertebral canal.
Located above or on top of the dura mater, one of the layers that cover the brain.