"Blood Vessel." Wikipedia. Wikimedia Foundation, n.d. Web. 12 Dec. 2014. <http://en.wikipedia.org/wiki/Blood_vessel>. This is a great picture of blood vessels, the artery and the vein. Arteries carry oxygenated blood from the heart to the rest of the body. Veins carry deoxygenated blood from the tissues to the heart. This is what our blood flows through, creating blood pressure by how much force is exerted on the vessel walls and this is where blood is drawn from for donation or testing. (wikipedia was only used for the photo).
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