ICSE Class 10 Answered
Please answer this:
Assertion(A): Sympathetic nervous system prepares the body for violent action against
abnormal conditions.
Reason (R): Sympathetic nervous system accelerates heartbeat.
Which of the followinfg is correct?
(a) Both A and R are true.
(b) A is ytrue, R os false.
(c) A is false but R is true.
(d) Both A and R are false.
Asked by anubhutiupadhaya | 19 Mar, 2024, 10:15: AM
Expert Answer
Assertion (A): The sympathetic nervous system prepares the body for violent action against abnormal conditions.
Reason (R): The sympathetic nervous system accelerates the heartbeat.
Correct answer: (a) Both A and R are true.
Explanation: In fight or flight situations, the sympathetic nervous system prepares the body for violent action against abnormal conditions. Therefore, it accelerates the heartbeat. On the other hand, the parasympathetic nervous system re-establishes normal conditions after the violent act is over. Therefore, it retards the heartbeat.
Answered by Sheetal Kolte | 19 Mar, 2024, 10:27: AM
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