An ECG provides information abouta. cardiac output,b. movement of the excitation wave across the heart,c. coronary circulation,d. valve impairment.

Explain what each of the following terms represents on an electrocardiogram (ECG).

a. P wave

b. QRS complex

c. T wave

d. P-R interval

e. S-T segment

Mark the following statements as true or false. If a statement is false, correct it to make a true statement.

d. The ventricular ejection phase generally correlates with the S-T segment and the T wave on the ECG.

When analyzing an ECG, you measure the time between the beginning of the QRS complex and the end of the T wave. Which physiological events are included in this interval?