What is considered a strong fibrous layer of the protective membranes surrounding the brain and spinal cord?

The dura mater is the outermost layer of the protective membranes, known as meninges, that encase the brain and spinal cord. It is a tough and durable layer, providing both protection and structural support to the central nervous system. Its fibrous composition helps to safeguard the delicate neural tissue from injury and also serves to anchor the brain within the cranial cavity and the spinal cord within the vertebral column.

The pia mater, while also protective, is much thinner and more delicate, closely adhering to the surface of the brain and spinal cord. The arachnoid mater, located between the dura mater and pia mater, provides a cushioning effect but lacks the same level of strength that characterizes the dura mater. Neuromater is not a recognized term in this context and does not correspond to any of the established meninges layers. Therefore, the dura mater stands out as the strong fibrous layer that plays a crucial role in protecting the central nervous system.