What are meninging?
The nerves of the spinal cord form a tube that begins in the brain and extends the entire length of the vertebral column. This cord and brain include a central nervous system, a complex and fine structure that requires many layers of protection. Meninges helps to provide this protection in the form of a set of membranes that surround and support the spinal cord and brain. They are composed of three membranes called PIA Mater, Arachnoid mater and Dura Mater.
Each layer of mening is a continuous layer that covers the entire brain and spinal cord. The PIA Mater is the innermost membrane and is the most beautiful of the three layers. It is also the narrowest, most fitting, running smoothly over the spinal cord and brain, the contours of their surfaces. Within the PIA Mater there is a network of capillaries that give blood to the brain and spinal cord. This CPIA Mater membrane layer is very free. Between the PIA mater and the arachnoid mater, the brain spinal cord layer further protects the brain and spinal cord by acting as a liquid pillow and shock absorber. This layer of spinal cord is a subarachnoid space.
The farthest membrane, Dura Mater, is the densest and strongest of the three and is the most durable of the layers. It contains a network of blood vessels that helps supply blood to the other two layers of mening. This membrane is actually formed by two sub -layers: the periostal layer and the inner meningal layer. In addition to providing the nervous system and blood protection for the inner membrane layer, the dura mater also surrounds and protects duralumin cavities. These are large channel structures that direct blood to the veins that return it to the heart.
Although primary features should protect the central nervous system, these membranes are vulnerable to certain types of injuries. The head injury may result in bleeding blood vessels, which potentially causes blood to join between layers or over the surface of the brain. If sufficient blood accumulates around the brain, it can cause brain damage due to increased intracranial pressure.
Mening are also susceptible to infection called meningitis. It is a bacterial or viral infection that causes inflammation of membranes. In most cases, bacterial infections are more dangerous than viral infections, as these tend to last only a few days. However, bacterial infections may persist much longer and potentially cause seizures and other symptoms threatening life. Antibiotics can effectively treat infection, but may result in temporary or permanent side effects, such as epilepsy, deafness and cognitive involvement.