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2
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an abdominal organ involved in the metabolic process
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4
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a clear cell in the blood that protects the body from disease
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5
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any of the branching blood vessels that form between arteries
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6
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a cell that is normally present in the body
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7
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a small colorless disc-shaped cell fragment
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8
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carries oxygenated blood from the heart to all parts of the body
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9
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an abdominal organ involved in the production and removal of blood cells
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10
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any of the tubes forming part of the blood circulatory system
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11
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chambers at the top of the heart that receive blood
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12
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chambers at the bottom of the heart that pump out blood
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13
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pumps blood through the circulatory system
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