Cardiac Cycle vs Electrocardiogram: The cardiac cycle represents mechanical heart activity, while the electrocardiogram shows its electrical activity; both correlate to diagnose rhythm and timing issues.
Conduction System of Heart: The heartÂ’s conduction system includes the SA node, AV node, bundle of His, bundle branches, and Purkinje fibers, coordinating the electrical impulses that drive rhythmic contractions.
Phases of the Cardiac Cycle: The cardiac cycle includes atrial systole, ventricular systole, and diastole, each phase coordinating contraction and relaxation to maintain continuous blood flow through the heart and circulatory system.
