18. The Heart

What is the cardiac output of a person with a heart rate of 60 beats per minute (bpm) and a stroke volume of 90 mL?

The QRS complex on the ECG represents which of the following events in the cardiac cycle?

Which of the following are considered events of the cardiac cycle?

Which events occur during the atrial contraction and ventricular filling phase of the cardiac cycle?

The shutting of the semilunar valves occurs during which phase of the cardiac cycle?

During which phase of the cardiac cycle is the heart filled with blood?

Which of the following statements about the cardiac cycle is true?

Which event of the cardiac cycle occurs when systolic blood pressure is measured?

In the cardiac cycle, the opening and closing of the heart valves is primarily caused by which factor?

Which of the following is not true for ventricular systole?

At what point during the cardiac cycle does the atrioventricular (AV) valve close?

In the cardiac cycle, when is the S2 heart sound heard?

During the isovolumetric relaxation phase of the cardiac cycle, which of the following occurs?

Which is the correct sequence of events in the cardiac cycle?