sympathetic nerve

The sympathetic nerve is part of the nervous system that prepares your body for "fight or flight" responses. It activates when you're stressed, frightened, or need to react quickly. This nerve signals your heart to beat faster, widens your airways for better breathing, directs blood flow to muscles, and releases energy stores. It works automatically, helping your body respond effectively during emergencies or intense situations, ensuring you have the energy and alertness needed to handle stressful events.