Final answer:
Atherosclerosis is the accumulation of plaque in the arteries, narrowing them and increasing the risk of heart disease.
Step-by-step explanation:
The buildup of plaque in the arteries is known as atherosclerosis. Atherosclerosis occurs when fatty substances, cholesterol, cellular waste products, calcium, and other substances build up in the inner lining of the arteries. Over time, this plaque narrows the arteries, limiting blood flow and increasing the risk of heart disease and other cardiovascular problems.
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