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HENNEPIN COUNTY, MINNESOTA - APRIL 14: can you describe the conduction system? it is a very important the orderly contraction of the heart, the two systems that pump blood to the body the way the heart works is two chambers on one side one to lungs and other to body, the push blood in ventricles to push blood and contract into body, so what you need is orderly contract process and coordinated by contruction system and has pace maker but the little piece of modified muscle and has normal function. does it have a name? (sp?) it causes the initial contraction and another nerve the atrial nerve that conduct that bond and then further that goes to spread the impulse to heart. what are those called? the bundle of fibers all have terminology but modified heart cells and those impulses to ad node and at that time the impulse arrives and fires and then heart contracts you get orderly double beat to heart hear them opening and closing 11:35:20 (Footage by Law&Crime via Getty Images)