fight-or-flight response

(redirected from Fight or flight response)
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Related to Fight or flight response: General adaptation syndrome

fight-or-flight response

(fīt′ôr-flīt′)
n.
A set of physiological changes, such as increases in heart rate, arterial blood pressure, and blood glucose, initiated by the sympathetic nervous system to mobilize body systems in response to stress.
References in periodicals archive ?
The fight or flight response, which helped ancient humans survive in a more physically dangerous world, prepared the body to battle with an enemy or run away.
When we perceive a threat, our brains trigger the fight or flight response. This causes a surge of adrenaline and the typical fear responses such as rapid breathing, palpitations and butterflies in the stomach - sensations we also associate with pleasure, for example, when we fall in love.
It's preparation for a fight or flight response, but as it's not a physical challenge the response is actually inappropriate.
"Our study was the first to examine the role of a dysfunctional fight or flight response in depression in a large population."