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Increase in heartbeat during fear is related to which hormone?

Answer and explanation

Correct answer: Adrenaline

Fear activates the body’s emergency or fight-or-flight response. The adrenal glands release adrenaline, which increases heart rate and breathing rate, directs more blood towards active muscles, and helps make energy available quickly. Insulin mainly regulates blood glucose, estrogen is a reproductive hormone, and auxin controls plant growth. Therefore adrenaline is the only option that explains the rapid heartbeat during fear.

Related tags

AdrenalineFearResponseControl And CoordinationWorld Of LivingScienceClass 10 Mcq

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