Meninges

The meninges are the layer of tissue that surrounds the brain and spinal cord. It consists of several layers, each of which performs its own function.

The first layer of the meninges is called the dura mater or dura mater. It is made up of dense connective tissue and protects the brain and spinal cord from damage. The dura mater is also involved in the exchange of substances between the brain and blood.

The second layer of the meninges is the arachnoid mater or arachnoidea. It also consists of dense connective tissue, but thinner and more transparent than the dura mater. The arachnoid membrane is involved in the formation of cerebrospinal fluid - a fluid that circulates in the brain and spinal cord and provides its nutrition.

The third layer of the meninges is the choroid or choroid plexus. It consists of small vessels that form a network on the surface of the brain and spinal cord. The choroid is involved in the transport of oxygen and nutrients to brain cells, and also removes metabolic products.

The meninges play an important role in maintaining the normal functioning of the brain and spinal cord, so damage to it can lead to serious consequences. For example, with head injuries or tumors, the meninges can be damaged, which can lead to leakage of cerebrospinal fluid and increased intracranial pressure, as well as disruption of the blood supply to the brain.

Overall, the meninges are a very important element of the nervous system, and their normal functioning plays a key role in maintaining human health and well-being.

The meninx (English meninx, M) is a fibrous plate that covers the cerebral hemispheres and the brain stem on the sides of the dura mater. In this article we will take a detailed look at the structure, functions and pathologies of the meninges, as well as the main diseases associated with it.

Structure of the meninges