DIAGRAM: GASTROINTESTINAL: GI: ARTERY: Effects of Hypertension on the Vessel Wall - 14 of 14, Atherosclerotic Plaque; A=Atherosclerotic Plaque -- In the absence of increased plasma lipoprotein levels, this intimal thickening does not generally lead to atherosclerotic plaque formation. In the presence of hyperlipoproteinemia, however, plaque formation resu