Question:
Which of the following causes Myocardial Infarction (MI)?
Which of the following causes Myocardial Infarction (MI)?
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Heart attacks are caused by blockages in the coronary arteries, leading to oxygen deprivation in the heart muscle.
Updated On: Dec 24, 2025
- Obstruction in one of the arteries supplying blood to the heart
- Obstruction in one of the arteries supplying blood to the brain
- Obstruction in one of the veins draining blood from the heart
- Obstruction in one of the veins draining blood from the brain
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The Correct Option is A
Solution and Explanation
Myocardial Infarction (MI), commonly known as a heart attack, occurs when there is an obstruction in the coronary arteries that supply oxygen-rich blood to the heart muscle. This blockage can lead to tissue damage due to the lack of oxygen. The blockage is often caused by a blood clot or plaque buildup.
- Option (A): The correct answer. MI is caused by blockage in the coronary arteries.
- Option (B): Blockage in arteries supplying blood to the brain causes strokes, not MI.
- Option (C): Obstruction in veins would affect blood return but would not cause MI. MI is related to oxygen supply, which is primarily through arteries.
- Option (D): Similar to option (C), blockage in veins affects drainage but not oxygen supply to the heart.
Thus, the correct answer is (A) Obstruction in one of the arteries supplying blood to the heart.
Final Answer: (A)
- Option (A): The correct answer. MI is caused by blockage in the coronary arteries.
- Option (B): Blockage in arteries supplying blood to the brain causes strokes, not MI.
- Option (C): Obstruction in veins would affect blood return but would not cause MI. MI is related to oxygen supply, which is primarily through arteries.
- Option (D): Similar to option (C), blockage in veins affects drainage but not oxygen supply to the heart.
Thus, the correct answer is (A) Obstruction in one of the arteries supplying blood to the heart.
Final Answer: (A)
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