Which of the following statements are true of the cardiac cycle (Select all that apply)?
A)The cardiac cycle is all of the events that take place in the heart in 1 minute.
B)Atrial systole is accompanied by ventricular diastole and is followed by ventricular systole.
C)Systole is the contraction phase,and diastole is the relaxation phase.
D)Most of the blood that moves from the atria to the ventricles is pumped.
E)About a third of the blood that moves from the ventricles to the arteries flows passively.
F)The AV valves are closed by the contraction of the ventricles.

Question

Quizplus · Accepted Answer

Atrial systole occurs while the ventricles are in diastole, and then ventricular systole follows. Systole refers to contraction, and diastole refers to relaxation. The AV valves close when the ventricles contract to prevent backflow into the atria.

Which of the Following Statements Are True of the Cardiac