CRAT Exam {Certified Rhythm Analysis Technician Prep} with Complete Solution

CRAT Exam {Certified Rhythm Analysis Technician Prep} with Complete Solution Pericardium -Answer Outer protective double-layered sac surrounding the heart. Epicardium -Answer Thin outermost layer of the heart, contains coronary arteries. Myocardium -Answer Middle muscular layer of the heart, contains electrical system. Endocardium -Answer Inner most layer of the heart, lines chambers and valves. Blood flow through the heart -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) -Answer Venules -- Veins -- Superior/Inferior VC -- Rt atria -- Tricuspid Valve -- Rt ventricle -- Pulmonary valve -- Pulmonary Artery Oxygenated blood(right side of heart) -Answer Pulmonary Veins -- Lt atria -- Bicuspid/Mitral valve -- Lt ventricle -- Aortic Valve -- Aorta -- Arteries -- Arterioles -- Capillaries Atrioventricular Valves(diastole) -Answer Valves between the atria and ventricles. Tricuspid, Bicuspid/Mitral. Regulates blood flow IN the heart. Semilunar Valves(systole) -Answer Pulmonary and Aortic valves separates Ventricles from corresponding artery. Regulates blood flow OUT of the heart. sinoatrial node (SA node) -Answer Primary pacemaker, 60-100bpm intrinsic rate atrioventricular node (AV) node -Answer 2nd pacemaker, 40-60bpm intrinsic rate Bundle of His -Answer normal connection between atria and ventricles bundle branches -Answer Branches off the Bundle of His that conduct impulses to the left and right ventricles Purkinje fibers -Answer conduction system terminates Automaticity -Answer The ability of the heart to generate and conduct electrical impulses on its own. Excitability -Answer ability of cardiac cell to respond to an impulse