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9 lis 2023 · Psychological or physical threats trigger the fight or flight or freeze or fawn response. It is a built-in defense mechanism implemented by evolution to cause physiological changes, including increased heart rate and heightened senses, enabling you to defend yourself rapidly from a perceived danger.
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Fight or Flight Flow Chart. 1. Stressful situation occurs. 2. Hypothalamus triggers activity in the sympathetic branch. 3. ANS changes from its normal state (parasympathetic) to physiologically aroused state (sympathetic) 4. Adrenaline is released into the bloodsteam. 5. Adrenaline causes increased heart rate, dilated pupils, dry mouth. 6.
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19 kwi 2018 · fight-or-flight response. Updated on 04/19/2018. a pattern of physiological changes elicited by activity of the sympathetic nervous system in response to threatening or otherwise stressful situations that leads to mobilization of energy for physical activity (e.g., attacking or avoiding the offending stimulus), either directly or by inhibiting ...
