JOHN BAVOSI / SCIENCE PHOTO LIBRARY JOHN BAVOSI / SCIENCE PHOTO LIBRARY
Angina pectoris. Illustration of the heart of a man suffering from the cardiac condition angina pectoris. The coronary arteries (red) which supply the heart muscle with oxygen lie below the larger aorta (red). Fatty deposits (yellow) can be seen on the inner walls in the sectioned arteries and, at upper right, they are causing stenosis, or arterial narrowing (orange). Angina pectoris leads to pain and spasm in the chest due to insufficient oxygen reaching heart muscle. Here there is also pain (red) in the man's arm. Angina is caused by coronary artery disease, where fatty deposits in the arteries reduce blood flow (atherosclerosis). Angina is treated with drugs and surgery.
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