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Explain how oxygen moves from the lungs to the blood stream

User Akz
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19 votes

Answer:

In a process called diffusion, oxygen moves from the alveoli to the blood through the capillaries (tiny blood vessels) lining the alveolar walls. Once in the bloodstream, oxygen gets picked up by the hemoglobin in red blood cells.

Step-by-step explanation:

User Miguel Ribeiro
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