Relaxation of heart muscles and allowing the chambers to fill with blood called...? Mcqs

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💡 English word par Double-Click karein: Urdu meaning + pronunciation 🔊

Relaxation of heart muscles and allowing the chambers to fill with blood called...?

(A) Diastole

(B) Systole

(C) Cardiac arrest

(D) Heart failure

✅ Correct Answer: Diastole

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Source: This question is taken from the Everyday Science

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