Physiologically, the fainting that is sometimes seen in cases of blood-injection-injury phobias MOST immediately reflects a rapid ______.

Question

Quizplus · Accepted Answer

Fainting in cases of blood-injection-injury phobias is known as vasovagal syncope, which is caused by a sudden drop in heart rate and blood pressure. This occurs due to activation of the vagus nerve, which causes blood vessels to dilate and the heart to slow down, leading to a decrease in blood supply to the brain and resulting in fainting. Adrenaline, GABA activity, and amygdala activity are not directly related to the mechanism of fainting in this context.

Physiologically, the Fainting That Is Sometimes Seen in Cases of Blood-Injection-Injury