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Cardiac cycle

Rearrange the sentences A to H to show the sequence of blood flow during cardiac cycle
A:Atria receive blood from veins and store it prior to each heart beat
B:Ventricular diastole
C:Pressure of Right atrium>Right ventricle-forces tricuspid valve to open
D:Pressure of Left atrium>Left ventricle-forces mitral valve open
E:Atrial systole
F:Atria fill up again to start next cycle. The volume increases while pressure decreases.
G:Ventricular systole
H:Electrical signal picked up by atrial ventricular node.Bundle of his transfer electrical activity down to apex of heart and along Purkinje fibers to initiate contraction of the ventricles.

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