how is oxygen transported from lungs to other parts of the body.
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The oxygen in inhaled air passes across the thin lining of the air sacs and into the blood vessels. This is known as diffusion. The oxygen in the blood is then carried around the body in the bloodstream, reaching every cell. When oxygen passes into the bloodstream, carbon dioxide leaves it.
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Each air sac is surrounded by network of fine blood vessels (capillaries).The oxygen in inhaled air passes across the thine lining of the air sacs and into the blood vessels .This is know as diffusion .The oxygen in the blood is then carried around the body in the bloodstream ,reaching every cell.
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