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Question

Statement 1: Parasympathetic neural system increases the rate of heart beat.
Statement 2: Sympathetic neural system decreases the rate of heart beat.

A
Both the statements are correct
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B
Both the statements are incorrect
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C
Statement 1 is true but statement 2 is false
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D
Statement 2 is true but statement 1 is false
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Solution

The correct option is B Both the statements are incorrect
Sympathetic and parasympathetic neural systems are types of autonomous nervous system. Sympathetic neural system can increase the rate of heart beat, the strength of ventricular contraction and thereby the cardiac output. On the other hand, parasympathetic neural system can decrease the rate of heart beat, speed of conduction of action potential and thereby the cardiac output.

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