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| the process in which the body cells break down glucose, using oxygen and releasing the chemical energy in the glucose. |
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| tiny, hair like extensions that can move together in a sweeping motion |
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| passages that take air to the lungs |
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| the main organs of the respiratory system. |
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| tiny, thin-walled sacs of lung tissue where gases can move between air and blood |
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| a large, dome-shaped muscle used to breathe |
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| folds of connective tissue stretched across the opening of the larynx |
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| a dark, sticky substance that forms when tobacco burns |
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| a colorless, odorless gas that binds to hemoglobin in red blood cells |
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| a stimulant drug in tobacco that increases heart rate and blood pressure |
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| physical dependence on something |
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| an irritation of the breathing passages in which the small passages become narrower and may be clogged with mucus |
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| occurs when lung tissue is damaged and breathing becomes difficult |
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| the process of removing waste |
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| a chemical that comes from the breakdown of proteins |
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| a fluid containing urea and other wastes |
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| act like filters that remove urea and other wastes from the blood but keep materials the body needs |
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| two narrow tubes that carry urine from the kidneys to the bladder |
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| a muscular sac that stores urine |
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| where urine leaves the body |
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| a tiny filtering factory that removes wastes from the blood and produces urine; found in the kidney |
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