Cardiac cycle
Cardiac cycle or cardiac output | |
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![]() MRI video of a teen's heart beating. | |
Organisms | Animalia |
Biological system | Circulatory system |
Health | Beneficial |
Action | Involuntary |
Method | Blood is allowed to enter relaxed ventricle chamber from vein through venous valve. Heart muscle contracts ventricle and blood is expelled through arterial valve to artery. |
Outcome | Circulation of |