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4
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A push or a pull
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5
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A product of respiration. We breathe is out and it is also removed by our kidneys
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6
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A chamber of the heart that receives blood. There are two.
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8
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Muscle that sits under our lungs to help them inhale and exhale
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9
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A muscle in the arm that contracts to straighten the arm
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11
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A major blood vessel that leaves the heart taking deoxygenated blood to the lungs
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13
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A major blood vessel that brings oxygenated blood from the lungs to the heart
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14
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A gas that is given off during respiration and transported to the lungs to breathe out
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15
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The smallest type of blood vessel we have
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17
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A muscle in the leg that contracts to bend the leg at the knee
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19
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The reaction that occurs in the mitochondria of the cells to make energy from oxygen and glucose
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20
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Tiny sac at the end of the branches within our lungs where gas exchange takes place
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23
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The movement of gases such as oxygen or carbon dioxide between the lungs and blood vessels
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