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Cardiovascular system (blood flow through the heart (body, superior&…
Cardiovascular system
Intrinsic factors
heart muscle cells contract, without nerve impulses, in a regular , continuous ways
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Layers of the heart
wall
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myocardium
middle,think muscle layer
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Cardiac cycle and ECG
ventricular system
blood pressure builds before ventricle contrasts, pushing out of blood
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mid-to-late
atria finish refilling, ventricular pressure is low
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