Atherosclerosis is also known as arteriosclerotic vascular disease that disrupts the flow of blood around the body, posing the risk of serious complications. Atherosclerosis is the narrowing of arteries due to a buildup of plaque around the artery wall. Arteries are lined with a thin layer of cells that keeps them smooth and allows blood to flow easily which is called the endothelium. Atherosclerosis begins when the endothelium becomes damaged, causing the harmful type of cholesterol to build up in the artery wall. Plaque can build up over time made of cholesterol, macrophages, calcium, and other substances from the blood. Sometimes, after the plaque grows to a certain size stops growing, causing no problems in an individual. Sometimes, the plaque clogs up the artery, disrupting the oxygenated blood flow around the body which makes blood clots more likely, which can result in life-threatening conditions. The plaque eventually breaks open in some cases that cause platelets to gather