Most Cardiovascular heart disease usually starts with a build up of a fatty substance called cholesterol on the inside of the coronary vessels. This reduces the diameter of the vessels and therefore, the flow of blood to the heart muscle.

Angina is the name given to a tight pain felt in the chest that occurs when insufficient oxygen is being carried in the blood to the muscles of the heart. 'Stable' angina usually occurs when the demand for oxygen cannot be met during exertion. 'Unstable' angina can occur at any time,

When brain cells in the infarct die, they release chemicals that set off a chain reaction. This chain reaction endangers brain cells in a larger surrounding area of the brain for which the blood supply is compromised but not completely cut off. Without prompt medical treatment this larger area of brain cells, called the penumbra, will also die.

Heart attacks can cause a clot that blocks one of the coronary arteries (the blood vessels that bring blood and oxygen to heart muscle). The clot prevents blood and oxygen from reaching that area of the heart, leading to the death of heart cells in that area. Usually, this occurs in a coronary artery that has been narrowed from changes related to arteriosclerosis.

Some common words found in the essay are:
Heart Attack, , brain cells, heart muscle, heart attack, oxygen heart, coronary arteries, oxygen heart muscle, heart attack heart, brain stroke occurs, coronary artery, stroke occurs, brain stroke, blood oxygen, death heart, blood heart muscle,
Approximate Word count = 661
Approximate Pages = 3 (250 words per page double spaced)