In 2000, 25.7% of US men and 21.0% of women were smokers.
Myocardial infarction, the medical term for heart attack, literally means "heart tissue damage or death.". Heart attacks most commonly occur when one or more of the coronary arteries — a network of blood vessels that supply blood to the heart — become blocked. Heart muscle becomes starved for oxygen and nutrients.
1. I think it is bloodstream
2. I am not sure
