Sympathetic nervous system

What is Sympathetic nervous system?

Sympathetic nervous system definition and meaning on Dictionary terms:
a sport growing out of water ballet in which swimmers, in solo, duet, and team efforts, complete various required figures by performing motions in relatively stationary positions, along with a freestyle competition, with the contestants synchronizing movements to music and being judged for body position, control, and the degree of difficulty of the moves.
a swimming exercise or exhibition derived from the competitive sport.