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8 Cards in this Set
- Front
- Back
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Myocardium |
The heart muscle |
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Intercalated discs |
The junction between adjacent cardiac muscle cells that forms a mechanical and electrical connection between cells |
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Syncytium |
A group of cells of the myocardium that function collectively as a unit during depolarization |
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Electrocardiogram (ECG) |
Tracing that provides a graphic illustration of the electrical current generated by excitation of the heart muscle |
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Diastole |
The relaxation phase of the cardiac cycle |
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Systole |
The contraction phase of the cardiac cycle |
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Cardiac cycle |
One complete sequence of contraction and relaxation of the heart |
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Stroke volume |
Amount of blood is directed from the ventricles with each beat of the heart. Important in supporting exercise |
