What occurs immediately prior to ventricular systole when blood is ejected from the atria into the ventricles?

Question

Quizplus · Accepted Answer

The term "atrial kick" refers to the contraction of the atria that occurs immediately prior to ventricular systole. During this contraction, blood is ejected from the atria into the ventricles, increasing ventricular filling and ultimately leading to a stronger ventricular contraction. Therefore, option D is the best choice as it accurately describes the physiological event that occurs immediately prior to ventricular systole. Option A (automaticity) and B (conductivity) both refer to general properties of cardiac cells that are not specifically related to this particular event. Option C (contractility) is a property of cardiac muscle cells, but it refers to the ability of the ventricles to contract and eject blood, rather than the event that immediately precedes this contraction.

What Occurs Immediately Prior to Ventricular Systole When Blood Is