impulse initiated in which Chamber of the heart
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SA node (sinoatrial node) – known as the heart's natural pacemaker. The impulse starts in a small bundle of specialized cells located in the right atrium, called the SA node. The electrical activity spreads through the walls of the atria and causes them to contract. This forces blood into the ventricles.
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Answer:RIGHT ATRIA
Explanation:right atria is the place where SAnode is present
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