What is the term for the device on the ECG that magnifies the heart's electrical impulses?

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Multiple Choice

What is the term for the device on the ECG that magnifies the heart's electrical impulses?

Explanation:
The main idea is that ECG signals are extremely small, so an amplifier is used to boost the heart’s electrical impulses enough to be recorded clearly. The heart’s electrical activity produces voltages in the microvolt range, and the amplifier increases their amplitude without distorting the waveform, allowing a readable tracing of the P, QRS, and T waves. AC interference refers to noise from power sources, not a device; artifact is unintended noise from movement or poor leads; the AV node is part of the heart’s conduction system, not a recording device.

The main idea is that ECG signals are extremely small, so an amplifier is used to boost the heart’s electrical impulses enough to be recorded clearly. The heart’s electrical activity produces voltages in the microvolt range, and the amplifier increases their amplitude without distorting the waveform, allowing a readable tracing of the P, QRS, and T waves. AC interference refers to noise from power sources, not a device; artifact is unintended noise from movement or poor leads; the AV node is part of the heart’s conduction system, not a recording device.

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