Which change usually occurs in the body when adrenaline is released from the adrenal gland?
Answer and explanation
Correct answer: Heartbeat and breathing rate increase
The governing concept is the emergency or fight-or-flight response. Adrenaline released by the adrenal glands prepares the body for rapid action by increasing heart rate, breathing rate, and blood supply to active muscles. These changes help deliver oxygen and energy quickly. Therefore option A is correct. Sleep, absence of blood changes, and complete muscle stoppage are opposite to the normal action of adrenaline.
Frequently asked questions
What is the correct answer to this question?
Heartbeat and breathing rate increase
Why is this the correct answer?
The governing concept is the emergency or fight-or-flight response. Adrenaline released by the adrenal glands prepares the body for rapid action by increasing heart rate, breathing rate, and blood supply to active muscles. These changes help deliver oxygen and energy quickly. Therefore option A is correct. Sleep, absence of blood changes, and complete muscle stoppage are opposite to the normal action of adrenaline.
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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