Which of the following measures the electrical activity of the heart?

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EEG

ECG

MRI

PCR

answer is B.

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Detailed Solution

An electrocardiogram (ECG) is a test that measures the electrical activity of the heart. It is often used to diagnose heart conditions such as arrhythmias and heart attacks. During an ECG, sensors called electrodes are placed on the chest, arms, and legs. These sensors detect the electrical signals produced by the heart as it beats. The signals are then recorded and displayed on a monitor or printed on paper. A typical ECG shows a series of waves and lines that represent the electrical activity of the heart. The waves and lines can be used to identify problems with the heart's rhythm or conduction system, such as an irregular heartbeat or a blockage in one of the heart's blood vessels.

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