If adrenaline secretion increases, which change helps provide more energy to muscles?
Answer and explanation
Correct answer: Increased heartbeat and breathing rate.
Adrenaline is an emergency hormone that prepares the body for rapid action. Its effects include increasing heart rate and breathing rate. Faster circulation delivers more blood and glucose to active muscles, while faster breathing improves oxygen intake; these support increased aerobic respiration and ATP production. Thus option A gives the relevant change. The other choices are unrelated to the emergency response and cannot explain increased energy supply to muscles.
Frequently asked questions
What is the correct answer to this question?
Increased heartbeat and breathing rate.
Why is this the correct answer?
Adrenaline is an emergency hormone that prepares the body for rapid action. Its effects include increasing heart rate and breathing rate. Faster circulation delivers more blood and glucose to active muscles, while faster breathing improves oxygen intake; these support increased aerobic respiration and ATP production. Thus option A gives the relevant change. The other choices are unrelated to the emergency response and cannot explain increased energy supply to muscles.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: World of Living. Topic: Control and Coordination.
