fight-or-flight response

American  

[fahyt-er-flahyt-ruh-spahns] / ˈfaɪt ərˈflaɪt rəˌspɑns /

noun

plural

fight-or-flight responses

1. Physiology. the body's response to stress, involving the release of epinephrine and effects such as increased heart rate, blood pressure, and respiration.

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fight-or-flight response Scientific  

/ fīt′ôr-flīt′ /

1. A physiological reaction in response to stress, characterized by an increase in heart rate and blood pressure, elevation of glucose levels in the blood, and redistribution of blood from the digestive tract to the muscles. These changes are caused by activation of the sympathetic nervous system by epinephrine (adrenaline), which prepares the body to challenge or flee from a perceived threat.

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