Why do Atherosclerotic Plaques Form in the Arteries, but not in theVeins?

Abstract

Blood flows in the arteries after it is saturated with nutrients in the
intestinal walls and oxygen in the lungs. Arterial blood is scarlet,
giving energy and life to every cell of the body. The blood in the
veins is already spent, poor in nutrients, saturated with carbon
dioxide, and there is little oxygen in it. But for some reason that
is still unknown to medicine, atherosclerosis and plaques form
in the arteries, but there are no plaques in the veins. Why is this
happening? Researchers have been thinking about this question
for at least the last 100 years, but so far there has been no result.