Answers

2015-09-25T19:53:07+08:00
ARTERIES ARE BLOOD VESSELS WHERE OXYGEN MOVE THROUGH THE VESSEL WALL.
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2015-09-26T09:25:53+08:00

If you mean the blood vessel carrying oxygenated blood it will be the arteries, but if mean the blood vessel where oxygen can diffuse through its wall it be the capillaries because its wall is only one cell thick, so thin that it allows gaseous material to pass through it.
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