Which is not an effect of smoking on the cardiovascular system?

Question

It increases blood cholesterol.
It increases the size of arteries and veins.
It contributes to atherosclerosis.
It increases the blood’s tendency to clot.

Answer 1

The statement that is not an effect of smoking on the cardiovascular system is: It increases the size of arteries and veins.

Smoking generally has negative effects on the cardiovascular system, including increasing blood cholesterol, contributing to atherosclerosis, and increasing the blood’s tendency to clot. However, smoking does not increase the size of arteries and veins; rather, it can lead to narrowing and damage of these blood vessels.