systole
The contractive phase of the heart beat is systole.
The two phases of the heartbeat are systole (contraction phase) and diastole (relaxation phase).
diastole
It is called Systole.
The human heartbeat has two phases. The systolic phase corresponds with contraction, and the diastolic phase with relaxation.
The relaxation phase of the heartbeat is called diastole. During diastole, the heart ventricles relax and fill with blood in preparation for the next contraction.
during diastolic phase the chambers of heart get filled with blood systolic phase and diastolic phase are the phases oh heartbeat and diastolic phase is also known as resting phase.
Contractive vacuole by diffussion
I think the answer is systole
systole
Systole refers to the phase of the heartbeat when the heart muscle contracts and blood is pushed out of the heart chambers. Diastole refers to the phase when the heart muscle relaxes and the heart chambers fill with blood.
Diastole is the relaxation phase. Systole is the contraction phase. If you put these phases together you have the Cardiac Cycle...