how does oxygen enter and carbon dioxide leave the bloodstream Flashcards

1
Q

oxygen

A

oxygen diffuses from the air in the alveoli (high o2 concentration) into the blood in the capillaries (low o2 concentration.

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2
Q

carbon dioxide

A

carbon dioxide diffuses from the blood in the capillaries (high co2 concentration) into the air in the alveoli (low co2 concentration)

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