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19.Chemical Coordination and Integration
easy
Assertion : Our body secretes adrenaline in intense cold.
Reason : Adrenaline raises metabolic rate
A
If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
B
If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.
C
If the Assertion is correct but Reason is incorrect.
D
If both the Assertion and Reason are incorrect.
(AIIMS-2006)
Solution
Adrenaline is an emergency hormone whose concentration increases under stress conditions. e.g. cold, stress. Adrenaline is secreted from adrenal medulla. It initiates many bodily responses, including the stimulation of heart action and an increase in blood pressure, metabolic rate, and blood glucose concentration.
Standard 11
Biology
