artery wall thickness artery tunica media measurement artery tunica media area 2013-01-15T11:21:04Z A direct measurement of two dimensional extent of the tunica media, the middle coat of the arterial wall, in a cross-section of an artery, one of the large blood vessels carrying blood in a direction away from the heart to the tissues. The total area of the tunica media gives an indication of the thickness of the arterial wall. JSmith arterial tunica media area media area (MA) of artery