JOHN BAVOSI / SCIENCE PHOTO LIBRARY JOHN BAVOSI / SCIENCE PHOTO LIBRARY
Coronary atherosclerosis. Artwork of a human heart showing narrowing of the coronary arteries due to atherosclerosis, a build up of fatty deposits (atheroma, yellow) on the artery wall. The large red vessel is the aorta, the main artery carrying blood from the heart to the body. Two coronary arteries arise from the aorta and supply the heart muscle with oxygen. Coronary artery disease leads to narrowing of the coronary arteries and abnormal clotting, which blocks the vessel and starves the heart's muscle of blood, causing a heart attack. The heart's other major blood vessels (blue; vena cava and pulmonary arteries) are also shown.
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