4. Assertion: Right Atria receives blood from all parts of the body which subsequently flows to the right ventricle. Reason: Heart beat originates in SA node and passes from atria to ventricles.
Read the following statements and choose the correct option.
1. Both assertion and reason are true and the reason is the correct explanation of the assertion.
2. Both assertion and reason are true but the reason is not the correct explanation of the assertion.
3. Assertion statement is true, but reason statement is false.
4.Both assertion and reason statements are false.
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