Sympathetic nervous system facts for kids
The Sympathetic nervous system is part of the autonomic nervous system. It becomes more active when you are stressed. It is a part of the "fight or flight" response. The sympathetic nervous system can increase heart rate; make bronchial passages wider; decrease motility (movement) of the large intestine; make blood vessels narrower; increase peristalsis in the esophagus; cause pupil dilation, piloerection (goose bumps) and perspiration (sweating); and raise blood pressure.
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The sympathetic nervous system extends from the thoracic to lumbar vertebrae and has connections with the thoracic, abdominal, and pelvic plexuses.
Sympathetic nervous system Facts for Kids. Kiddle Encyclopedia.