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PET images of blood flow changes during anxiety: correction

W C Drevets, T Q Videen, A K MacLeod

    Science (New York, N.Y.)
    |June 19, 1992
    PubMed
    Abstract

    No abstract available in PubMed .

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    Blood Flow01:29

    Blood Flow

    Blood is pumped by the heart into the aorta, the largest artery in the body, and then into increasingly smaller arteries, arterioles, and capillaries. The velocity of blood flow decreases with increased cross-sectional blood vessel area. As blood returns to the heart through venules and veins, its velocity increases. The movement of blood is encouraged by smooth muscle in the vessel walls, the movement of skeletal muscle surrounding the vessels, and one-way valves that prevent backflow.