Medical Assistant Certification (MAC) AMCA Practice Exam

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What hormone is responsible for triggering the fight or flight response?

Insulin
Cortisol
Epinephrine
Adrenaline

The correct answer is: Epinephrine

The hormone that plays a crucial role in triggering the fight or flight response is epinephrine, also known as adrenaline. When a person faces a stressful situation, the adrenal glands release epinephrine into the bloodstream. This hormone prepares the body to react to perceived danger by increasing heart rate, elevating blood pressure, and boosting energy supplies. It helps to enhance physical performance and mental alertness, allowing an individual to either confront or escape from the threat. Epinephrine mobilizes resources to ensure that the body can respond rapidly and effectively to stressors. It is significant in both physical exertion and in situations requiring quick thinking or decisive action, aligning with the body’s need to react to immediate challenges. The relationship between epinephrine and the fight or flight response is well established in the field of physiology, making it the correct answer to the question.