Acute Stress is an immediate physical reaction to something in the world and can be negative or positive in nature (Surgery, Accidents, Arguments, Marriage, Birth of a baby, a job promotion). Adrenaline, norepinephrine, and epinephrine are produced in response to acute stress and together make up the fight or flight response. (MacDonald)
In response to a stimulus, the adrenal glands secrete adrenaline, epinephrine in large amounts, and norepinephrine in smaller amounts. The adrenals produce adrenaline commonly known as the fight or flight hormone, notice that a stressful situation has presented itself. (hormone.org). Fear has been proven to lead to anxiety, and anxiety is regulated by adrenaline, which is only increased during times of acute stress. Adrenaline combined with epinephrine is what causes the immediate effects a person feels when dealing with acute stress. It causes the SNS to operate by increasing the heart rate, and blood pressure. It moves blood flow from areas that may not contribute to fighting or fleeing danger, such as from the digestion system and moves it to the muscles. “Strong emotions such as fear or anger cause epinephrine to be released into the bloodstream. (University of Delaware). This chemical reaction also temporarily increases the amount of energy released to help fight or flee the danger. (Heart.org). The primary role of norepinephrine, like adrenaline, is arousal. When one is stressed, they become more aware, awake, and focused making them more responsive. (Klein).