An artificial pacemaker is a small electronic device implanted in the chest to help regulate abnormal heart rhythms, known as arrhythmias. It is used when the heart's natural pacemaker, the sinoatrial node, functions improperly, causing the heart to beat too slowly or irregularly. The device sends electrical impulses to the heart muscle, ensuring a consistent heart rate and rhythm. This helps ensure efficient blood flow and oxygen delivery around the body. Understanding artificial pacemakers is important in GCSE Biology as it relates to the function of the heart and how medical technology can support the circulatory system.
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