CRAT Exam (Certified Rhythm Analysis Technician Prep) With Correct Answers.Pericardium - Correct Answer Outer protective double-layered sac surrounding the heart.Epicardium - Correct Answer Thin outermost layer of the heart, contains coronary arteries.Myocardium - Correct Answer Middle muscular layer of the heart, contains electrical system.Endocardium - Correct Answer Inner most layer of the heart, lines chambers and valves.Blood flow through the heart - Correct Answer Venules --> Veins --> Superior/Inferior VC --> Rt atria --> Tricuspid Valve --> Rt ventricle --> Pulmonary valve --> Pulmonary Artery --> Lungs --> Pulmonary Veins --> Lt atria --> Bicuspid/Mitral valve --> Lt ventricle --> Aortic Valve --> Aorta --> Arteries --> Arterioles --> Capillaries --> Body Deoxygenated blood(left side of heart) - Correct Answer Venules --> Veins --> Superior/Inferior VC --> Rt atria --> Tricuspid Valve --> Rt ventricle --> Pulmonary valve --> Pulmonary Artery Oxygenated blood(right side of heart) - Correct Answer Pulmonary Veins --> Lt atria --> Bicuspid/Mitral valve --> Lt ventricle --> Aortic Valve --> Aorta --> Arteries --> Arterioles --> Capillaries Atrioventricular Valves(diastole) - Correct Answer Valves between the atria and ventricles. Tricuspid, Bicuspid/Mitral. Regulates blood flow IN the heart.Semilunar Valves(systole) - Correct Answer Pulmonary and Aortic valves separates Ventricles from corresponding artery. Regulates blood flow OUT of the heart.sinoatrial node (SA node) - Correct Answer Primary pacemaker, 60-100bpm intrinsic rate atrioventricular node (AV) node - Correct Answer 2nd pacemaker, 40-60bpm intrinsic rate Bundle of His - Correct Answer normal connection between atria and ventricles
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