Question

An electrocardiogram is a graphic illustration of the ________.

1) cardiac conduction system
2) cardiac cycle
3) cardiac output
4) systemic and pulmonary circuits
5) coronary vessels

Answer 1

An electrocardiogram (ECG) is a graphic illustration of the cardiac cycle, which includes important electrical events and the corresponding mechanical events of a heart contraction.

Step-by-step explanation:

An electrocardiogram (ECG) is a record of the voltages created by the wave of depolarization and subsequent repolarization in the heart. It is a graphic illustration of the cardiac cycle, which includes important electrical events and the corresponding mechanical events of a heart contraction. Each component, segment, and interval on an ECG tracing corresponds to one event in the cardiac cycle, providing valuable information about the heart's function and rhythm.