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Questions and Answers
Which chamber of the heart receives poorly oxygenated (venous) blood from the body?
Which chamber of the heart receives well-oxygenated (arterial) blood from the lungs?
Which chamber of the heart pumps blood into the aorta for distribution to the body?
Which event marks the beginning of diastole?
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What causes the first heart sound (lub) heard with a stethoscope?
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What causes the second heart sound (dub) heard with a stethoscope?
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What event marks the end of diastole?
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Which layer of the heart wall is composed of cardiac muscle?
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What is the outermost layer of the heart wall called?
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Which layer of the heart wall lines the internal surface of the heart and its valves?
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Which structure of the heart prevents the orifices of the valves from being overly distended?
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What is the function of the fibrous skeleton of the heart?
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Which part of the heart provides attachment for the leaflets and cusps of the valves?
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What shape does the heart appear to be from an anterior or posterior view?
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What is the function of the fibrous skeleton in terms of electrical conduction in the heart?
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Which part of the heart is formed mainly by the left atrium?
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Where is the apex of the heart located in adults?
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Which surface of the heart is formed mainly by the left ventricle and partly by the right ventricle?
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Which part of the heart remains motionless throughout the cardiac cycle?
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Which part of the heart receives the pulmonary veins?
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Which border of the heart is formed by the right atrium and extends between the superior vena cava and the inferior vena cava?
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What structure emerges from the superior border of the heart?
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What is the arterial continuation of the right ventricle and divides into right and left pulmonary arteries?
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