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Question

Read the following statements and choose the correct option.
Statement 1: Atrial receives blood from all parts of the body which subsequently flows to ventricles.
Statement 2: Action potential generated at sino-atrial node passes from atria to ventricles.

A
Action mentioned in Statement 1 is dependent on action mentioned in Statement 2.
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B
Action mentioned in Statement 2 is dependent on action mentioned in Statement 1.
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C
Actions mentioned in Statements 1 and 2 are independent of each other.
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D
Actions mentioned in Statements 1 and 2 are synchronous.
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Solution

The correct option is C Actions mentioned in Statements 1 and 2 are synchronous.
Atria receive blood from all parts of the body which subsequently flows to the ventricles. Action potential generated at sinoatrial node passes from the atria to the ventricles. Both these events take place at the same time.
Thus, the correct answer is 'Actions mentioned in Statements 1 and 2 are synchronous.'

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