CRAT Exam Questions with Correct Answers 100% Solved

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