biology 1 cardiac cycle 2.0 / 5 based on 1 rating ? BiologyASAll boards Created by: Molly RandallCreated on: 22-05-10 18:14 Atrial Systole 1 of 8 atria contract blood is forced through the atrioventricular valves into ventricles 2 of 8 Ventricular systole 3 of 8 Ventricles contract.blood is forced through the valves into the arteries 4 of 8 Diastole 5 of 8 Muscles of ventricle contract 6 of 8 Sinoatrial node 7 of 8 A group of cells that produce regulat waves of electrical activity, near the top of the right atrium. often called the hearts pacemaker 8 of 8
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