According to News-medical.net
The nervous system is an organ system containing a network of specialized cells called neurons that coordinate the actions of an animal and transmit signals between different parts of its body.
It consists of the central and peripheral nervous system in most animals. Going in to detail about the nervous system would take quite a long time so you can have a peek at this link –> the nervous system.
The main purpose of this nervous system post is to share what I learned about snake nervous systems and digestion in the case of poor Garlick the leucistic Texas Rat Snake. His family brought him in to the vet hospital after noticing that on top of a bump in the middle of his body, he had regurgitated one mouse and rejected another. When I was preparing to check him in, I was expecting an abdominal mass and was worried to see it along his back. I tried to get as much information as I could and even got to handle him. It worried me that most of his body past the lump mostly sat in my arms. I followed the doctor in to watch her during the appointment. She was checking the strength of his muscles before an after the break as the portion of his body beyond the break still had minor movement. I was present during x-rays and saw in the first one, a dark white spot where the lump was. Upon rotating the snake to the side, it was made obvious that the poor guy had suffered a break in its back. The vertebrae were practically overlapping. I later heard the doctor explain that the snake nervous system is based on each vertebrae acting on its own. For Garlick, digestion no longer worked properly starting at the break.
- Clues to nervous system evolution found in nerve-less sponge (sciencedaily.com)
- Scientists Find Protein in Limb-Nerve Repair (voanews.com)