A system is a ordered module of elements that interact with each other and are interrelated . The notion is used to name the set of concrete (material) objects and the set of abstract (symbolic) concepts endowed with organization .
Nervous , on the other hand, is what pertains or pertains to nerves (the set of fibers that drive impulses through various parts of the body).
These definitions allow us to refer to the nervous system , which is the tissue network which is responsible for capturing and processing signals so that the body develops an effective interaction with the environment.
The nervous system fulfills three great functions. The sensitive function is given by the ability to feel the stimuli (internal and external), while the integrating function It is responsible for analyzing these stimuli, storing information and promoting a decision in this regard. The motor function Finally, it is the response to stimuli through a muscle movement, a secretion of a gland, etc.
However, how could it be otherwise, in the proper functioning of the nervous system the brain plays a key role. And it is that this is responsible for processing the information it receives in what would be the cerebral cortex and, from there, collate it and then transform it into real material.
The neurons They constitute the only basic nervous system. These are specialized cells that coordinate the actions by means of chemical and electrical signals that it sends to the different regions of the organism.
It is possible to divide the nervous system into Central Nervous System (SNC ) and peripheral nervous system (SNP ). He SNC , formed by the brain and spinal cord, integrates sensitive information, generates thoughts and stores memory.
The brain would have to say that it is the mass that is contained within the brain and that is surrounded by the meninges. These are three membranes that, in turn, are composed of the pia mater, the dura and the arachnoid.
It should also not be overlooked that the brain is divided into three distinct elements: the cerebellum, the brain and the medulla. However, although these are the main and most bulky, the midbrain or hypothalamus are also part of it.
He SNP , on the other hand, it is composed of the cranial nerves (born in the brain) and the spinal nerves (born in the spinal cord) and transfers the impulses.
In addition to all of the above, we should point out that there are a number of diseases that have the particularity of affecting notably or exclusively what the nervous system is. Specifically, we would have to say that these are the most common or significant:
• Multiple sclerosis, which is a degenerative pathology that causes serious damage to the central nervous system. It can cause from disability to a certain degree of reduced mobility.
• Parkinson's. It is the neurons that directly damage this disease, specifically those that are responsible for the control of muscle movements.
• Alzheimer's. It is a degenerative pathology that causes damage to neurons and that results in notable memory losses.