FRANCIS LEROY, BIOCOSMOS / SCIENCE PHOTO LIBRARY FRANCIS LEROY, BIOCOSMOS / SCIENCE PHOTO LIBRARY
Microcirculation. Artwork showing the network of blood vessels that deliver blood to tissues. Oxygenated blood is delivered to the capillaries (centre) by an arteriole, which is surrounded by smooth muscle cells. The capillaries exchange oxygen and carbon dioxide with the surrounding tissue. The deoxygenated blood drains into a venule and is returned to the heart and lungs.
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