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10 cards from this deck
Energy release from food in cells
Moving air in and out of lungs
Filters air, traps dust with small hairs
Thin walls, large surface area, many capillaries
Intercostal muscles & diaphragm contract
Intercostal muscles & diaphragm relax
Movement from high to low concentration
21%21\%21% to 16%16\%16%
0.04%0.04\%0.04% to 4%4\%4%
Closes over trachea when swallowing to prevent choking
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