When an organism perceives a threat,the fight-or-flight response is due to

Question

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The fight-or-flight response is a physiological reaction that prepares the body to respond to a perceived threat or danger. It is caused by the arousal of the sympathetic nervous system and the release of stress hormones from the endocrine system, such as adrenaline and cortisol. This response results in several physiological changes including increased heart rate and blood pressure, dilation of the pupils, increased respiration, and decreased digestion, all of which help to prepare the body for action. Choice A is incorrect because constriction of the pulmonary arteries would actually impede blood flow to the lungs and decrease oxygenation of the blood which would not be helpful in a potentially dangerous situation. Choice B is incorrect because the parasympathetic nervous system is responsible for rest and relaxation, not for arousing the body. Choice D is also incorrect because increased blood supply to the brain and heart is only part of the fight-or-flight response, not the primary cause of it.

When an Organism Perceives a Threat,the Fight-Or-Flight Response Is Due