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1
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Located between the left ventricle and the aorta, this closes to prevent blood from flowing back into the left ventricle.
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2
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Located between the left atrium and left ventricle; keeps blood from flowing back into the left atrium
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4
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The period of ventricular contraction in the cardiac cycle.
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6
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Name given to the cardiac cycle where the atria contract; often called a period of rest.
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7
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Liquid portion of blood which is made up of apporximately 90% water, with many dissolved or suspended substances.
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9
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Vessels that carry blood away from the heart.
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11
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Transportation system of the body, also called the cardiovascular system.
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15
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Smooth layer of cells that lines the inside of the heart and is continuous with the inside of blood vessels.
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18
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Upper chamber of the heart which receives blood from the lungs.
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19
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Muscular middle layer of the heart.
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21
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Double-layered membrane, or sac, that covers the outside of the heart.
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22
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Complex protein which carries both carbon dioxide and oxygen.
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24
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Upper chamber of the heart which receives deoxygenated blood from the body.
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