.During respiration oxygen diffuses from ___________ to________________.
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The partial pressure of oxygen is high in the alveoli and low in the blood of the pulmonary capillaries. As a result, oxygen diffuses across the respiratory membrane from the alveoli into the blood. In contrast, the partial pressure of carbon dioxide is high in the pulmonary capillaries and low in the alveoli.
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during respiration, oxygen diffuses from bronchi(alveoli) to blood vessels
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