sy­dä­men ­toi­min­ta­kier­tosubstantiivi

1. 1.sydämen tapahtumien täysi sarja yhden sydämenlyönnin alusta seuraavan alkuun

1. 1.the complete cycle of events in the heart from the beginning of one heart beat to the beginning of the next; an electrical impulse conducted through the heart muscle that constricts the atria which is followed by constriction of the ventricles; "the cardiac cycle can be shown on an electrocardiogram"

Hierarkia