Final answer:
Atherosclerosis is the progressive thickening of the arteries due to plaque build-up, leading to various cardiovascular diseases such as myocardial infarction and angina.
Step-by-step explanation:
The progressive thickening of the arteries due to the build-up of cholesterol and other substances is called atherosclerosis. Atherosclerosis is a condition in which plaque accumulates in the arteries, causing them to become narrow and stiff. This can lead to various cardiovascular diseases, such as myocardial infarction (heart attack) and angina (chest pain).
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