Heart Wall and Cardiac Cycle
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Last updated 1:11 AM on 3/30/26
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6 Terms
1
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3 layers of heart wall?
Endocardium, myocardium, epicardium
2
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Which layer is thick muscle?
Myocardium
3
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What is systole?
Ventricular contraction (blood ejection)
4
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What is diastole?
Ventricular relaxation (filling)
5
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What causes heart sounds?
Valve closures
6
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Why are intercalated discs important?
Allow coordinated contraction
