Final answer:
C) Plaque blockage A heart attack, or myocardial infarction, is usually caused by a blockage from plaque buildup in the coronary arteries, which interrupts blood flow to the heart muscle and can lead to the death of heart tissue.
Step-by-step explanation:
A heart attack, also known as myocardial infarction (MI), is a severe condition that occurs when blood supply to the heart muscle is interrupted. This typically happens due to a plaque blockage in the coronary arteries. Plaque consists of fatty substances, cholesterol, and other materials. When plaque builds up, it narrows the arteries and can eventually lead to complete blockage, preventing oxygen and vital nutrients from reaching the heart muscle. The affected heart tissue can die, resulting in a heart attack.
Coronary heart disease is a common precursor to a heart attack, which is the leading cause of death in adults in the United States. Symptoms of a heart attack may include chest pain and pressure, but some heart attacks occur without any symptoms. It's crucial to seek immediate medical attention if a heart attack is suspected.A heart attack, also known as myocardial infarction, occurs when blood flow to a part of the heart is blocked, leading to the death of cardiac muscle cells. This blockage is commonly caused by the buildup of atherosclerotic plaque in the coronary arteries, which consists of lipids, cholesterol, fatty acids, and white blood cells. Excessive exercise can trigger a heart attack when a partially blocked artery is unable to pump enough blood.