Answered

Which of the following describes systole?
O atrial and ventricular filling
O atrial and ventricular contraction
O gas exchange in the alveoli
the amount of blood ejected form the LV



Answer :

GinnyAnswer

Final answer:

Systole in the cardiac cycle involves the contraction of the atria and ventricles to effectively pump blood within the heart.


Explanation:

Systole refers to the atrial and ventricular contraction phase of the cardiac cycle. During this phase, the atria and ventricles contract to pump blood within the heart. Atrial systole contributes the final portion of blood filling the ventricles before ventricular systole.


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