Myocardial infarction, also called a heart attack,
A) is caused by excessive blood pressure in the heart.
B) actually causes no permanent damage to the heart.
C) is unrelated to cigarette smoking.
D) is the damage or death of cardiac muscle tissue.

Question

Quizplus · Accepted Answer

Myocardial infarction is the damage or death of cardiac muscle tissue. This occurs when the blood flow to a part of the heart is obstructed by a blood clot, usually due to a buildup of cholesterol and other substances in the blood vessels leading to the heart. Excessive blood pressure in the heart or cigarette smoking can contribute to the buildup in the blood vessels, but they are not the direct cause of a heart attack. A heart attack can cause permanent damage to the heart, reducing its ability to pump blood effectively.

Myocardial Infarction, Also Called a Heart Attack