Increase in heartbeat and breathing rate during fear is related to which hormone?
Answer and explanation
Correct answer: Adrenaline
The governing concept is the emergency or fight-or-flight response. In a frightening situation, the adrenal glands release adrenaline. This hormone increases heart rate, breathing rate and blood flow to muscles so that the body can respond rapidly and obtain more oxygen and energy. Thyroxine regulates general metabolism, insulin regulates blood glucose, and growth hormone supports growth; none gives this immediate fear response. Hence option C is correct.
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What is the correct answer to this question?
Adrenaline
Why is this the correct answer?
The governing concept is the emergency or fight-or-flight response. In a frightening situation, the adrenal glands release adrenaline. This hormone increases heart rate, breathing rate and blood flow to muscles so that the body can respond rapidly and obtain more oxygen and energy. Thyroxine regulates general metabolism, insulin regulates blood glucose, and growth hormone supports growth; none gives this immediate fear response. Hence option C is correct.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: World of Living. Topic: Control and Coordination.
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