Is arteriosclerosis hardening of the arteries?

Atherosclerosis. It is a progressive hardening of the arteries, caused by fat, cholesterol, and other substances building up in the arteries - this is called plaque - making the arteries stiffer.This plaque interferes with the normal function of the arteries and can cause problems and symptoms throughout the body.The plaque can block the arteries and/or it can break off and flow to smaller vessels and block them.
Yes. Arteriosclerosis is the deposition of fat and transformation of that fat into what eventually results in hardening of the arteries.