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What is the central nervous system? »Its definition and meaning

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The Central Nervous System, also abbreviated as CNS, is the set of organs present in various living beings, responsible for processing stimuli that come from the outside, in addition to sending nerve impulses to muscles and nerves. It is one of the most complex systems present in the body, which is made up of perfectly organized cells, even giving rise to very characteristic substances, such as white matter and gray matter. This, although of great importance, can be subject to serious infections or medical conditions, affecting the responses emitted by the body and with little or no capacity for regeneration.

The Central Nervous System is formed mainly by the brain and the spinal cord. The first, for its part, is in charge of all the voluntary reactions that the body emits, and is divided into three essential areas: the forebrain, the midbrain and the rhombencephalon. The brain stem, also known as the brainstem, is the one that serves as the channel through which messages are sent, communicating the peripheral nerves, the forebrain and the spinal cord. The latter, a cord located right in the middle of the vertebral canal, is responsible for sending impulses to the spinal nerves, serving as the bridge between the brain and the rest of the body.

Among the most common infections that can affect the CNS are: cerebritis, an inflammation in the brain, caused by direct injuries to the System or by the action of bacteria; encephalitis, a process in which various areas become inflamed and, as a consequence, neuronal death occurs; lastly, meningitis, an inflammation in the meninges, which, if infectious, is produced by bacteria.