Coronary artery disease

Coronary arteries are the blood vessels which supply the muscle of the heart with its oxygen and energy supply. Coronary arteries can become blocked by the build-up of a fatty substance in the wall of the coronary artery. When the blockage is severe, it produces chest pain during exercise and can produce a heart attack … Read more

(i) Angina. -When the heart is called upon to work harder, as it is during exercise or excitement, its need for energy (and oxygen) is increased. Normally this increased need is met by increased blood flow through the coronary arteries. If one of the coronary arteries is furred up by atheroma, part of the heart … Read more