A) auricular systole-ventricular diastole-joint diastole
B) auricular systole-ventricular systole-complete cardiac diastole
C) ventricular diastole - auricular systole - complete cardiac diastole
D) joint diastole-ventricular systole-complete cardiac diastole
Correct Answer: B
Solution :
During a heart beat, contraction and relaxation of auricles and ventricles occur in specific sequence forming a cardiac cycle. The correct sequence of events in a cardiac cycle is auricular systole (contraction of auricles) due to the increase pressure of blood in atria. Ventricular systole (contraction of ventricles) due to the increased blood pressure in ventricle. Complete cardiac diastole.
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