ANSWERS|LATEST UPDATE!!!!!!2026|GUARANTEED
CORRECT = 100
100
INCORRECT=0
STUDY MATERIALS.......DESIGNED TO HELP YOU SUCCEED
1
, SPOTLIGHT 1
Where is the heart located? - ANSWER in the thoracic cavity, between the lungs, in the
mediastinum cavity, above diaphragm, below sternum, in front of the spine
Which ventricle has a thicker wall? - ANSWER left ventricle
What are the semilunar valves? - ANSWER pulmonary and aortic
What are the atrioventricular valves? - ANSWER tricuspid and bicuspid (mitral)
What supports the atrioventricular valves to help prevent back flow of blood? -
ANSWER chordae tendineae anchored to papillary muscles
What is the S1 sound? - ANSWER "lub" and AV valves closing
What is the S2 sound? - ANSWER "dub" and semilunar valves closing
What is systole? - ANSWER when the ventricles contract and expel blood; between S1
and S2 beats
What is diastole? - ANSWER when the ventricles relax and fill will blood; between S2
and the next S1
What is the blood flow through the heart? - ANSWER vena cava, right atrium, tricuspid
valve, right ventricle, pulmonary valve, pulmonary artery, lungs, pulmonary veins, left
2
, atrium, bicuspid (mitral) valve, left ventricle, aortic valve, aorta, arteries, arterioles,
capillaries, venules, veins
What is the epicardium? - ANSWER the outermost layer of the heart where coronary
arteries run along; visceral layer of pericardium
What is the myocardium? - ANSWER the middle, thick, muscular layer of the heart
that does the contracting; this is damaged during an MI
What is the endocardium? - ANSWER the innermost layer of the heart that lines the
heart chambers, folds back on itself to form heart valves, and is watertight to prevent
leakage; the cardiac conduction system is here
What is the pericardium? - ANSWER the double-walled sac that encloses the heart
with two layers, the visceral layer and the parietal layer; it supports, protects, and anchors
the heart to the diaphragm and great vessels and a small amount of pericardial fluid is
between the layers to decrease friction
What is the superior vena cava? - ANSWER a large vein that returns deoxygenated
blood to the right atrium from the head, neck, upper chest, and arms
What is the inferior vena cava? - ANSWER a large vein the returns deoxygenated blood
to the right atrium from the lower chest, abdomen, and legs
What is the aorta? - ANSWER the largest artery in the body that takes oxygenated
blood from the left ventricle to systemic circulation to feed all organs of the body
What are the five great vessels? - ANSWER superior vena cava, inferior vena cava,
pulmonary artery, pulmonary veins, aorta
3
CORRECT = 100
100
INCORRECT=0
STUDY MATERIALS.......DESIGNED TO HELP YOU SUCCEED
1
, SPOTLIGHT 1
Where is the heart located? - ANSWER in the thoracic cavity, between the lungs, in the
mediastinum cavity, above diaphragm, below sternum, in front of the spine
Which ventricle has a thicker wall? - ANSWER left ventricle
What are the semilunar valves? - ANSWER pulmonary and aortic
What are the atrioventricular valves? - ANSWER tricuspid and bicuspid (mitral)
What supports the atrioventricular valves to help prevent back flow of blood? -
ANSWER chordae tendineae anchored to papillary muscles
What is the S1 sound? - ANSWER "lub" and AV valves closing
What is the S2 sound? - ANSWER "dub" and semilunar valves closing
What is systole? - ANSWER when the ventricles contract and expel blood; between S1
and S2 beats
What is diastole? - ANSWER when the ventricles relax and fill will blood; between S2
and the next S1
What is the blood flow through the heart? - ANSWER vena cava, right atrium, tricuspid
valve, right ventricle, pulmonary valve, pulmonary artery, lungs, pulmonary veins, left
2
, atrium, bicuspid (mitral) valve, left ventricle, aortic valve, aorta, arteries, arterioles,
capillaries, venules, veins
What is the epicardium? - ANSWER the outermost layer of the heart where coronary
arteries run along; visceral layer of pericardium
What is the myocardium? - ANSWER the middle, thick, muscular layer of the heart
that does the contracting; this is damaged during an MI
What is the endocardium? - ANSWER the innermost layer of the heart that lines the
heart chambers, folds back on itself to form heart valves, and is watertight to prevent
leakage; the cardiac conduction system is here
What is the pericardium? - ANSWER the double-walled sac that encloses the heart
with two layers, the visceral layer and the parietal layer; it supports, protects, and anchors
the heart to the diaphragm and great vessels and a small amount of pericardial fluid is
between the layers to decrease friction
What is the superior vena cava? - ANSWER a large vein that returns deoxygenated
blood to the right atrium from the head, neck, upper chest, and arms
What is the inferior vena cava? - ANSWER a large vein the returns deoxygenated blood
to the right atrium from the lower chest, abdomen, and legs
What is the aorta? - ANSWER the largest artery in the body that takes oxygenated
blood from the left ventricle to systemic circulation to feed all organs of the body
What are the five great vessels? - ANSWER superior vena cava, inferior vena cava,
pulmonary artery, pulmonary veins, aorta
3
