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प्रश्न
Assertion (A): Sympathetic nervous system prepares the body for violent action against abnormal conditions.
Reason (R): Sympathetic nervous system accelerates heartbeat.
Which of the following is correct?
विकल्प
Both A and R are True.
A is True, R is False.
A is False but R is True.
Both A and R are False.
उत्तर
Both A and R are True.
Explanation:
Catecholamine hormones (epinephrine and nor-epinephrine) released by sympathetic nerve systems raise heart rate. Our body so gets ready for fight or flight and becomes hyperactive or violent under uncommon circumstances.
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