4-stage cross-section of an artery demonstrating atherosclerosis in which the narrowing of the artery is due to a buildup of fatty tissue (cholesterol) and plaque. 4-stages: - normal artery - fatty streak - fibrous plaque - blockage The stages cause a decrease in blood flow, which can lead to a blood clot or thrombus. All stages rotate on hinge pin. Diameter: 3.5 cm, Size: 9 cm, weight: 0.1 kg