artery defined in 1951 yearartery - artery;
artery - Blood vessel carrying blood from the heart towards the tissues. In vertebrates arteries have thick walls, containing elastic and collagen fibres and smooth muscle, to withstand the high blood pressure near the heart. They are lined with smooth flat cells (endothelium), like other blood vessels. Arterial system starts with one or few arteries at heart, which by repeated branching as they proceed away from the heart give rise to an increasing number of ever smaller arteries, until the branches become arterioles.
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