Sympathetic nervous system: Carries out your body’s “fight or flight” functions Parasympathetic nervous system: Carries out your body’s “rest and digest” functions ...

The central nervous system is made up of the brain and spinal cord. It gathers information from all over the body and coordinates activity. We explore the types of cells involved, the regions of ...

Because C. elegans is so tiny -- adults are just one millimeter long and have only about 1,000 cells -- its simple nervous system of a few hundred neurons (302 in the hermaphrodite/female sex, 385 ...