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Cardiac+Conduction+System+Essay.docx - Cardiac Conduction...

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Cardiac Conduction System EssayThey initiate the normal cardiac cycle and coordinate the contractions of cardiacchambers. Both atria contract together, just like the ventricles, but atrial contractionoccurs first. The conducting system provides the heart its automatic rhythmic beat. Forthe heart to pump efficiently and the systemic and pulmonary circulations to operate insync, the events in the cardiac cycle must be coordinated. These pacemaker cells cangenerate electrical impulses and spread junctions across both atria whichcauses theatrial muscles to contract. From there, the signal travels to the AV node which is locatedwithin the atrioventricular septum, near the opening of the coronary sinus. It acts todelay the impulses by approximately 120ms, to ensure the atria have enough time tofully eject blood into the ventricles before ventricular systole. It then passes from the AV
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Term
Summer
Professor
Mr. Danielson
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Cardiac Conduction System Essay

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