ARTERY, SURGERY Anatomy of an artery. Illustration of the various layers of an arterial wall. From the exterior inwards: - the tunica adventitia or adventitia (two tissue types, collagen and elastic tissue) - the tunica media or media (smooth muscle) - tunica intima or intima (three types of tissue: elastic tissue, a layer of sub-endothelial cells and the endothelium) which is the layer closest to the arterial lumen.
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