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  • one year ago

In the lungs, oxygen passes through the walls of the _____________ and into the blood. cilia trachea vessels alveoli Where is the diaphragm located? just below the trachea just below the lungs inside the lungs behind the sinuses When the diaphragm moves downward, the lungs fill with air. True False The diaphragm moves upward to make us breathe in. True False What do capillaries do? connect the windpipe and the lungs filter bacteria out of the air we breathe connect arteries and veins help fight infection

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  1. anonymous
    • one year ago
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    @Trojan I feel so bad for doing his but I need help you dont have to help if you dont want to

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