NURSING ANM AND GNM

Detailed explanation-1: -Three layers of membranes known as meninges protect the brain and spinal cord. The delicate inner layer is the pia mater. The middle layer is the arachnoid, a web-like structure filled with fluid that cushions the brain. The tough outer layer is called the dura mater.

Detailed explanation-2: -The pia mater is the innermost layer of meninges. This thin, delicate membrane is tightly bound to the surface of the brain and spinal cord and cannot be dissected away without damaging the surface.

Detailed explanation-3: -The meninges separate three spaces called the epidural space, subarachnoid space, and the subdural space. Each of these spaces contains some important blood vessels, rupture of which can cause headache. The epidural space is a potential space located between the inner surface of the skull and the tightly adherent dura.