Which of the following is the function of parasympathetic nervous system?

Decreases heart beat

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Increases heart beat

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Starts heart beat

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Has no effect on heart beat.

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Solution

The correct option is A Decreases heart beat
The parasympethetic nervous system decreases the heart rate by releasing acetylcholine which may have resulted due to a shock, stress, heavy exercise etc.
So, the correct answer is option A.

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