ATHENAIS, ISM / SCIENCE PHOTO LIBRARY ATHENAIS, ISM / SCIENCE PHOTO LIBRARY
Shoulder and neck arteries. Coloured X-ray of the head, neck and shoulders, with the arterial blood vessels (arteries) revealed by the injection of a contrast medium (angiography). The arteries (red) are the branching structures. The bones are also seen. The skull (top) is seen in profile, with the mouth and nose at upper left. The spine runs down far right, with shoulder bones seen across bottom. Each side of the body has a main shoulder artery, the subclavian artery (bright red, across bottom). Two main arteries run up each side of the neck, the left and right, internal and external carotid arteries. Other major arteries are the vertebral arteries that run along the spine.
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