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What is the path of an oxygen molecule from the air outside you to your tissues?

Answer

nose (or mouth) larynx, trachea, primary bronchi, secondary brnchi, tertiary bronchi, bronchioles, alveoli, alveolar capillaries, pulmonary vein, left atrium of heart, left ventricle of heart, aorta, arteries, arterioles, capillaries, interstitial
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