The nervous system is the first system of the body to develop, coordinating each organ, muscle, gland and cell so that each can function in perfect harmony. The brain constantly receives information from the external and internal world, and thanks to the functioning of the nervous system, it can respond adequately to the needs of the moment by sending information back to the body. This process leads to a constant optimal adaptation of the body, commonly called health.
The Central Nervous System (CNS) that makes up the brain and spinal cord is the only organ in the body that is completely protected by a layer of bone: the skull (protecting the brain) and the spine (protecting the spinal cord).
We can imagine the spinal cord as the highway that transports all the information from the body to the brain and vice versa, being an essential element for the correct functioning of the nervous system.