The nervous system, like Grand Central Station, continuously has information coming in to the brain and going out to the body.
“The central nervous system,” according to Webster’s Dictionary, “consists of the brain and the spinal column, to which sensory impulses are transmitted and from which motor impulses pass out, and which coordinates the activity of the entire nervous system.”
The nervous system coordinates body movements and brain function. Gross motor skills (e.g. running and jumping) need to be in good working order BEFORE fine motor skills (handwriting) can function at their best.