Anat-The Heart
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| size of heart | size of a closed fist
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| location of heart | in the thoracic cavity in the mediastinum; protected by the ribcage and the sternum
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| shape of heart | top is flat (base) and connects to major blood vessels, bottom is like the blunt, rounded point of a cone (apex) and points to the left side of the body
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| parts of the pericardium | fibrous and serous pericardium
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| fibrous pericardium structure/function | made up of dense (fibrous) irregular connective tissue for strength surrounds the heart and anchors it to the diaphragm and the base of the great vessels
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| parts of the serous pericardium | parietal and serous pericardium and pericardial cavity (pericardial fluid)
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| parietal pericardium location | lines the inner surface of the fibrous pericardium
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| visceral pericardium location | lines the heart
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| vein | any blood vessel that carries blood to the heart
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| artery | any blood vessel that carries blood away from the heart
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| auricle location/structure | like an extra little bit of an atrium-one found on each atrium; has a scalloped edge (ear-shaped)
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| auricle function | adds extra volume to the atrium
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| atrium structure | smaller of the two chambers and somewhat thin-walled
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| ventricle structure | much larger and thicker-walled of the two chambers
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| major veins connecting to the heart | superior vena cava, inferior vena cava, pulmonary veins
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| superior vena cava function | carries blood above the heart back to the heart; empties into the right atrium
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| inferior vena cava function | carries blood below the heart back to the heart; empties into the right atrium
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| pulmonary veins (left and right) function | carry blood from the lungs to the left atrium
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| major arteries connecting to the heart | aorta, pulmonary trunk
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| aorta function | carries blood high in oxygen from the left ventricle to all the organs and tissues of the body (branches though)
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| pulmonary trunk function | carries blood from the right ventricle to the lungs (divides)
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| heart valves function | ensure a single, one-way flow of blood through the heart
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| two atrioventricular valves | tricuspid and bicuspid
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| tricuspid valve location | between the right atrium and ventricle
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| bicuspid valve name/location | mitral valve; between the left atrium and ventricle
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| aortic semilunar valve location | between the left ventricle and the base of the aorta
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| pulmonary semilunar valve location | between the right ventricle and the base of the pulmonary trunk
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| chordae tendineae structure/location | thin, white strands of collagen fibers (thin and tough tendons) that attach to the edge of an atrioventricular valve and the inner surface of the ventricular wall (papillary muscles)
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| papillary muscles structure/function | finger-like projections that connect to the chordae tendineae
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| direction of blood flow (simplistically) | flows from areas of high pressure to areas of low pressure
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| systemic circulation parts | left atrium and ventricle and all the blood vessels that carry blood to all the peripheral organs and tissues of the body; blood to and from the body
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| pulmonary circulation parts | right atrium and ventricle and pulmonary arteries and veins; blood to and from the lungs
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Created by:
Jean-O
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