A heart attack is a lay term for what is known in the medical world as a myocardial infarction, or MI for short.
Infarction means that blood stops going to an area and the area dies from a lack of oxygen, because it is the blood that carries the oxygen.
Myocardium is the medical word for the heart muscle itself.
Therefore a myocardial infarction, or a “heart attack”, is when there is a blockage in one of the blood vessels that supply the heart muscle and that part of the heart muscle is damaged as a result.
P.S. this is the correct answer
The body ultimately has three things that can go wrong with it. The pump (heart), the tubes (veins/arteries/etc), and the fluid (blood). In a MI (myocardial infarction/ heart attack) the pump is not getting any or enough fluid due to a block in the pumps own pipes. Thus, the rest of the body gets no freshly oxygenated fluid through the rest of the pipes.
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