CRAT Exam UPDATED Study Guide QUESTIONS AND CORRECT ANSWERS

CRAT Exam UPDATED Study Guide
QUESTIONS AND CORRECT ANSWERS
Pericardium - CORRECT ANSWERS Outer protective double-layered sac surrounding the
heart.



Epicardium - CORRECT ANSWERS Thin outermost layer of the heart, contains coronary
arteries.



Myocardium - CORRECT ANSWERS Middle muscular layer of the heart, contains electrical
system.



Endocardium - CORRECT ANSWERS Inner most layer of the heart, lines chambers and
valves.



Blood flow through the heart - CORRECT ANSWERS 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 ANSWERS Venules --> Veins -->
Superior/Inferior VC --> Rt atria --> Tricuspid Valve --> Rt ventricle --> Pulmonary valve -->
Pulmonary Artery



Oxygenated blood(right side of heart) - CORRECT ANSWERS Pulmonary Veins --> Lt atria -
-> Bicuspid/Mitral valve --> Lt ventricle --> Aortic Valve --> Aorta --> Arteries --> Arterioles -->
Capillaries



Atrioventricular Valves(diastole) - CORRECT ANSWERS Valves between the atria and
ventricles. Tricuspid, Bicuspid/Mitral. Regulates blood flow IN the heart.



Semilunar Valves(systole) - CORRECT ANSWERS Pulmonary and Aortic valves separates
Ventricles from corresponding artery. Regulates blood flow OUT of the heart.



sinoatrial node (SA node) - CORRECT ANSWERS Primary pacemaker, 60-100bpm intrinsic
rate