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.
Frequently asked questions
What is the correct answer to this question?
Adrenaline
Why is this the correct answer?
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.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: World of Living. Topic: Control and Coordination.
