Compare College Savings Options. There are a number of investment accounts you can use to help save for a child's education. Each offers different features and benefits and can be opened by a friend or relative on behalf of a child. 1.
The fight or flight response is a catch-all phrase describing the body's response to stress. 1  Fight or flight refers to the two choices our ancestors had when facing a dangerous animal or enemy.
fight-or-flight response in Medicine Expand. 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. 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.