AP BIOLOGY

Detailed explanation-1: -fight-or-flight response, response to an acute threat to survival that is marked by physical changes, including nervous and endocrine changes, that prepare a human or an animal to react or to retreat.

Detailed explanation-2: -Adrenaline and noradrenaline are dubbed emergency hormones or Fight or Flight hormones. These hormones are rapidly released in reaction to stress of any kind and during emergency situations. These hormones stimulate alertness, pupil dilation, piloerection (hair growth), perspiration, and other bodily functions.

Detailed explanation-3: -Catecholamines. Catecholamines are the primary mediators of the fight-or-flight response. Norepinephrine is the major neurotransmitter in the peripheral sympathetic nervous system, whereas epinephrine is the primary hormone secreted by the adrenal medulla.

Detailed explanation-4: -The fight-or-flight response, also known as the acute stress response, refers to a physiological reaction that occurs in the presence of something that is terrifying, either mentally or physically.

Detailed explanation-5: -Epinephrine, also known as adrenaline, is both a neurotransmitter and a hormone. It plays an important role in your body’s “fight-or-flight” response.