The diagram illustrates how the electrical activity in the heart muscle changes during a single cardiac cycle. This is known as an electrocardiograph (ECG). Which electrocardiogram shows a heart rate of 75 beats per minute?
Biology 9700 · AS & A Level · The heart
The diagram illustrates how the electrical activity in the heart muscle changes during a single cardiac cycle. This is known as an electrocardiograph (ECG). Which electrocardiogram shows a heart rate of 75 beats per minute?