What is the resilience of the outermost brain membrane largely due to?

The resilience of the outermost brain membrane, known as the dura mater, is largely attributed to its fibrous structure. The dura mater is composed of dense connective tissue, which provides it with strength and durability. This fibrous composition enables the membrane to effectively protect the brain and spinal cord from physical trauma, as it forms a tough barrier.

Additionally, the structure of the dura mater allows it to withstand tearing and stretching, which is crucial for safeguarding the central nervous system. This quality is vital in maintaining the integrity of the brain, especially in situations where there could be movement or displacement, such as during a fall or impact.

In contrast, while thickness can contribute to protective qualities, it is the specific organization and type of the fibrous tissue that primarily define the durability of the dura mater. Other factors, such as an inner layer or fluid content, provide additional features to the brain's protective system but do not capture the essence of the membrane's resilience as effectively as its fibrous structure does.