The Electrocardiogram (ECG) Shows a Record of

Question

The electrocardiogram (ECG) shows a record of .
A) electrical activity of the heart muscle
B) each heart beat (or contraction)
C) the electrical events in the intrinsic conduction system

Accepted Answer

An electrocardiogram (ECG) records the electrical activity of the heart muscle, which is reflected in the waves and intervals seen on the ECG tracing.