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The heart’s physiology

The heart’s physiology. The cardiac cycle and coronary flow. Conduction System. https:// www.youtube.com/watch?v=A2YoGyNhAns. Coronary flow. https:// www.youtube.com/watch?v=tBQa8IBzP6I. The conduction system of the heart is composed sino -atrial node ( SA node or pacemaker of the heart)

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The heart’s physiology

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  1. The heart’s physiology The cardiac cycle and coronary flow

  2. Conduction System https://www.youtube.com/watch?v=A2YoGyNhAns

  3. Coronary flow https://www.youtube.com/watch?v=tBQa8IBzP6I

  4. The conduction system of the heart is composed • sino-atrial node ( SA node or pacemaker of the heart) • atrio-ventricular node (AV) • right and left bundle • The electrical conduction precedes the mechanical response of the heart muscle that lead to the relaxation (diastole) and contraction (systole) components of the cardiac cycle • Coronary blood flow occurs during diastole • The heart muscle (myocardium) extracts oxygen needed to function Summary

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