CRAT Exam 2026 Questions and 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
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, 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
bundle branches - Correct answer-Branches off the Bundle of His that conduct
impulses to the left and right ventricles
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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
©COPYRIGHT 2025, ALL RIGHTS RESERVED 1
, 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
bundle branches - Correct answer-Branches off the Bundle of His that conduct
impulses to the left and right ventricles
©COPYRIGHT 2025, ALL RIGHTS RESERVED 2
