How does oxygen -rich blood reach every part of the body???.
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Answer:
Blood vessels work as a team.
When the heart contracts, blood is pumped into arteries that carry it away from the heart. Arteries are connected to tiny, thin-walled blood vessels called capillaries, which allow oxygen to move from the blood into the cells of the body.
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Explanation:
Blood vessels work as a team.
When the heart contracts,blood is pumbed into arteries that carry it away from the heart Arteries are connected to tiny,thin-walled blood vessels called capillaries.
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