EKG PLAIN AND SIMPLE 4 EXAM 2026
COMPLETE QUESTION SET AND CORRECT
ANSWERS GRADED A PLUS
◉ Sternum.
Answer: breastbone
◉ Epicardium.
Answer: Outermost layer of the heart
◉ Myocardium.
Answer: Middle and thickest layer of the heart
◉ Endocardium.
Answer: Thin innermost layer of the heart
◉ Pericardium.
Answer: double walled sac that encloses the heart
◉ Right Atrium.
,Answer: receiving chamber for deoxygenated blood returning to the
heart from the body
◉ Right Ventricle.
Answer: pumps blood to the lungs for a fresh supply of oxygen
◉ Left Atrium.
Answer: receiving chamber for blood returning to the heart from the
lungs.
◉ Left ventricle.
Answer: pumps blood out to the entire body. Work horse of the
heart.
◉ Septum.
Answer: a muscular band of tissue that divides the heart into left
and right sides
◉ Semilunar valves.
Answer: separates ventricles from arties and have 3 half mood
shaped leaves
◉ Pulmonic valve.
,Answer: located between right ventricle and the pulmonary artery
◉ Aortic.
Answer: valve located between the left ventricle and the aorta
◉ Atrioventricular valves.
Answer: located between and atrium and ventricle
◉ chordae tendineae.
Answer: tendon cords that support AV valves
◉ papillary muscles.
Answer: muscles that come off the ventricular wall
◉ Tricuspid valve.
Answer: located between the right atrium and ventricle and has
three leaves
◉ Mitral valve.
Answer: located between the left atrium and ventricle and has two
leaves. Also known as bicuspid valve.
, ◉ Superior Vena Cava.
Answer: large vein that returns deoxygenated blood to the right
atrium from the upper part of the body
◉ Inferior Vena Cava.
Answer: large vein that returns deoxygenated blood to the right
atrium from the lower part of the body
◉ Pulmonary artery.
Answer: Large artery that takes deoxygenated blood from the right
ventricle to the lungs to get oxygen. Only artery that carries
deoxygenated blood.
◉ Pulmonary veins.
Answer: Four large veins that return oxygenated blood from the
lungs to the left atrium. Only veins that carry oxygenated blood.
◉ Aorta.
Answer: Largest artery in the body. Takes oxygenated blood from left
ventricle to feed all organs of the body.
◉ Cardiac cycle.
Answer: The mechanical events that occur to pump blood. Has two
phases
COMPLETE QUESTION SET AND CORRECT
ANSWERS GRADED A PLUS
◉ Sternum.
Answer: breastbone
◉ Epicardium.
Answer: Outermost layer of the heart
◉ Myocardium.
Answer: Middle and thickest layer of the heart
◉ Endocardium.
Answer: Thin innermost layer of the heart
◉ Pericardium.
Answer: double walled sac that encloses the heart
◉ Right Atrium.
,Answer: receiving chamber for deoxygenated blood returning to the
heart from the body
◉ Right Ventricle.
Answer: pumps blood to the lungs for a fresh supply of oxygen
◉ Left Atrium.
Answer: receiving chamber for blood returning to the heart from the
lungs.
◉ Left ventricle.
Answer: pumps blood out to the entire body. Work horse of the
heart.
◉ Septum.
Answer: a muscular band of tissue that divides the heart into left
and right sides
◉ Semilunar valves.
Answer: separates ventricles from arties and have 3 half mood
shaped leaves
◉ Pulmonic valve.
,Answer: located between right ventricle and the pulmonary artery
◉ Aortic.
Answer: valve located between the left ventricle and the aorta
◉ Atrioventricular valves.
Answer: located between and atrium and ventricle
◉ chordae tendineae.
Answer: tendon cords that support AV valves
◉ papillary muscles.
Answer: muscles that come off the ventricular wall
◉ Tricuspid valve.
Answer: located between the right atrium and ventricle and has
three leaves
◉ Mitral valve.
Answer: located between the left atrium and ventricle and has two
leaves. Also known as bicuspid valve.
, ◉ Superior Vena Cava.
Answer: large vein that returns deoxygenated blood to the right
atrium from the upper part of the body
◉ Inferior Vena Cava.
Answer: large vein that returns deoxygenated blood to the right
atrium from the lower part of the body
◉ Pulmonary artery.
Answer: Large artery that takes deoxygenated blood from the right
ventricle to the lungs to get oxygen. Only artery that carries
deoxygenated blood.
◉ Pulmonary veins.
Answer: Four large veins that return oxygenated blood from the
lungs to the left atrium. Only veins that carry oxygenated blood.
◉ Aorta.
Answer: Largest artery in the body. Takes oxygenated blood from left
ventricle to feed all organs of the body.
◉ Cardiac cycle.
Answer: The mechanical events that occur to pump blood. Has two
phases
