Which of the following correctly identifies the phases of the cardiac cycle?

Question

Quizplus · Accepted Answer

Option B correctly identifies the different phases of the cardiac cycle in order:

1. Passive ventricular filling (diastole) 
2. Atrial contraction (systole) 
3. Isovolumetric contraction (systole) 
4. Ventricular ejection (systole) 
5. Isovolumetric relaxation (diastole)

Option A is incorrect because it lists "atrial filling" before "atrial systole," when in fact atrial systole leads to atrial emptying or ventricular filling. Likewise, it lists ventricular diastole before ventricular filling.

Option C is incorrect because it's not a correct sequence of events in the cardiac cycle, but rather a simplified explanation of blood flow through the heart.

Option D is incorrect as it suggests that all chambers of the heart contract simultaneously, which is not the case.

Which of the Following Correctly Identifies the Phases of the Cardiac