The fight-or-flight response is triggered by the sympathetic branch of the autonomic nervous system.

Name: The fight-or-flight response is triggered by the sympathetic branch of the autonomic nervous system.
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The sympathetic branch of the autonomic nervous system is responsible for triggering the fight-or-flight response. This response prepares the body to either fight off a threat or flee from it, by increasing heart rate, blood pressure, and respiratory rate, while decreasing digestive activity.

The Fight-Or-Flight Response Is Triggered by the Sympathetic Branch of the Autonomic