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The heart’s physiology

Explore the physiology of the heart's cardiac cycle and coronary flow, including details on the conduction system's components and the essential role of coronary blood flow during diastole. Learn how the heart's electrical conduction precedes its mechanical response, affecting diastole and systole. Discover how the myocardium extracts oxygen for proper function.

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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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