Fight-or-flight response
[fahyt-awr-flahyt] /ˈfaɪt ɔrˈflaɪt/
noun, Physiology, Psychology.
1.
the response of the sympathetic nervous system to a stressful event, preparing the body to fight or flee, associated with the adrenal secretion of epinephrine and characterized by increased heart rate, increased blood flow to the brain and muscles, raised sugar levels, sweaty palms and soles, dilated pupils, and erect hairs.
fight-or-flight reaction 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. Also called emergency theory.
fight-or-flight response
(fīt’ôr-flīt’)
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.
Read Also:
- Fight shy
verb phrase To avoid: We had better fight shy of the chaos in the Balkans (1821+)
- Figjam
/ˈfɪɡˌdʒæm/ noun 1. (Austral, slang) a very conceited person
- Fight tooth and nail
Engage in vigorous combat or make a strenuous effort, using all one’s resources. For example, I’m going to fight tooth and nail for that promotion. This expression, with its allusion to biting and scratching, was first recorded in 1576.
- Fig-leaf
noun 1. the leaf of a fig tree. 2. a representation of a fig leaf, used as an ornament in architecture, as a cover for the genitalia on a statue or in a painting, etc. 3. something intended to conceal what may be considered indecorous or indecent: to approach the facts of life with the […]
- Figlu
formiminoglutamic acid