AP BIOLOGY

Detailed explanation-1: -The sympathetic nervous system functions like a gas pedal in a car. It triggers the fight-or-flight response, providing the body with a burst of energy so that it can respond to perceived dangers. The parasympathetic nervous system acts like a brake.

Detailed explanation-2: -The fight or flight response is an automatic physiological reaction to an event that is perceived as stressful or frightening. The perception of threat activates the sympathetic nervous system and triggers an acute stress response that prepares the body to fight or flee.

Detailed explanation-3: -What Happens During the Fight-or-Flight Response. In response to acute stress, the body’s sympathetic nervous system is activated due to the sudden release of hormones. The sympathetic nervous systems stimulate the adrenal glands triggering the release of catecholamines, which include adrenaline and noradrenaline.

Detailed explanation-4: -A stressful situation, whether environmental or psychological, can activate a cascade of stress hormones that produce physiological changes. Activation of the sympathetic nervous system in this manner triggers an acute stress response called the “fight or flight” response.