Answer:
When something goes wrong with the sinoatrial node, you may develop a consistently slow heartbeat (sinus bradycardia) or the normal pacemaker activity may stop entirely (sinus arrest). If sinus arrest occurs, usually another area of the heart takes over pacemaker activity. This area is called an escape pacemaker.
Explanation:
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<span>Two atoms of hydrogen and one atom of hydrogen </span>
Answer:
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Explanation:
A sheep skull has 5 bones, each part consists of it own functions!
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