Question

Assertion : Our body secretes adrenaline in intense cold.
Reason : Adrenaline raises metabolic rate.

• A. If both Assertion and Reason are true and the reason is the correct explanation of the assertion
• B. If both Assertion and Reason are true but the reason is not the correct explanation of the assertion
• C. If Assertion is true statement but Reason is false
• D. If both Assertion and Reason are false statements

Answer 1

Answer: (A)

Adrenal medulla secretes, two hormones adrenaline (epinephrine) and non-adrenaline (non-epinephrine) in an approximate ratio of $4$ to $1$ , respectively.
Adrenaline is called emergency hormone because it releases on the time of fear, cold, fight, emotional states, danger, pain-lack of $O_2$ and blood loss etc. and increases the blood pressure, heart beats, tightening of the stomach, dry mouth, trembling muscles, general feeling of anxiety and increased awareness that attends sudden fright or other strong emotional states.