Sympathetic nervous system

The sympathetic nervous system is part of the autonomic nervous system, which controls involuntary bodily functions. It prepares the body for action in stressful situations, often referred to as the "fight or flight" response. When activated, it increases heart rate, dilates airways, and redirects blood flow to muscles, providing the body with a burst of energy and heightened alertness. This system helps individuals respond to threats or emergencies, enhancing survival by preparing the body to either confront or flee from danger. Its counterpart, the parasympathetic nervous system, promotes relaxation and recovery afterward.