The nervous system network models are kind of like a map. This map is made up of lots of little roads, just like the nerves in your body. These roads connect different parts of your body. The map can tell scientists where each road goes and how they all work together. Scientists use these maps to understand how your body works and works together because it's hard to see inside a body. They can use these maps to figure out what might be wrong if somebody is feeling sick or having an emergency.