Heart performance during ventricular<unk> : early<unk>  is a suction mechanism that draws blood 'down' from the left atrium (pink) and right atrium (blue) into each of the two ventricles. Then, in late ventricular<unk> , the two atrial chambers begin to contract (atrial systole), forcing additional blood flow into the ventricles.<unk>  ( ) is the part of the cardiac cycle during which the heart refills with blood after the emptying is done during systole (contraction). Ventricular<unk>  is the period during which the two ventricles are relaxing from the contortions/wringing of contraction, then dilating and filling; atrial<unk>  is the period during which the two atria likewise are relaxing under suction, dilating, and filling. The term originates from the Greek word <unk> , meaning "dilation", from (diá, "apart") + (stéllein, "to send").
Diastole
Asystole
Afterload
Junctional rhythm
End-systolic volume
Delta wave
End-diastolic volume
Delta Wave