Define these terms 1 cardiac cycle 2 heartbeat

Dear student,1)The cardiac cycle is the sequence of events that occurs when the heart beats. As the heart beats, it circulates blood through pulmonary and systemic circuits of the body. There are two phases of the cardiac cycle. In the diastole phase, the heart ventricles are relaxed and the heart fills with blood. In the systole phase, the ventricles contract and pump blood out of the heart and to arteries. 2) heartbeat can be defined as one complete pulsation of the heart.Regards