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science

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Across
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cells that control the beat of the heart
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the force of blood flow in a vessel
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Another name for the heart system
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the left branch of the aorta
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a wall between the chambers of the heart
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a blood vessel that carries blood to the heart
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A tube that connects to the heart and has blood in it
Down
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blood vessels that take deoxygenated blood to the lungs
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A flap of tissue to prevent backflow in the body
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the lower chambers of the heart
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The upper chamber of the heart
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a flap of tissue between the left atrium and the left ventricle
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blood vessels that deliver oxygen to the heart
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The biggest type of a blood vessel
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largest artery in your body