Your nervous system is a network that sends signals between your brain and other parts of your body to control your body's movements and processes. This system includes your brain, spinal cord, and ...

Parapluie. That's the French word for umbrella. Para means against. Pluie means rain. A parapluie keeps a rainstorm from getting you soaking wet. Parasympathetic. That is the name of the system that ...

The sympathetic nervous system was thought to have evolved with jawed vertebrates. But lampreys—jawless, parasitic fish that suck out the blood of their hosts—have a simple one, per recent research.