Use the drop-down menu to select the best answer.After entering the body, air moves down the bronchial tubes, enters the lungs, moves through the mouthbronchiolescapillariesblood vessels, and then flows into the alveoli.

After air travels down the bronchial tubes into the lungs, it passes through smaller airways called bronchioles. The bronchioles lead to the alveoli, where gas exchange occurs. Capillaries and blood vessels carry blood, not air, and the mouth is where air enters the body.

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