MEDizzy
MEDizzy
Hunain
Hunainabout 3 years ago
The cardiac cycle

The cardiac cycle

The cardiac cycle is the performance of the human heart from the beginning of one heartbeat to the beginning of the next. It consists of two periods: one during which the heart muscle relaxes and refills with blood, called diastole, following a period of robust contraction and pumping of blood, called systole. 

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