AEMCA Practice Exam

What primarily causes angina?

1. Blockage of blood flow to the brain

2. Narrowing of the coronary arteries due to atherosclerosis

3. Increased physical activity

4. High cholesterol levels in the bloodstream

The correct answer is: Narrowing of the coronary arteries due to atherosclerosis

Angina is primarily caused by the narrowing of the coronary arteries due to atherosclerosis. Atherosclerosis is a condition where plaque builds up in the arterial walls, leading to reduced blood flow to the heart muscle. This decreased blood flow can cause a sensation of pain or discomfort in the chest, commonly referred to as angina, particularly during times of increased demand for oxygen, like physical exertion or stress. While increased physical activity contributes to the onset of angina symptoms by increasing the heart's demand for oxygen, it is not the underlying cause. Likewise, high cholesterol levels can contribute to atherosclerosis, but they do not directly cause angina. Additionally, blockage of blood flow to the brain relates to different cardiovascular issues, such as stroke, and is not a factor in angina specifically. The relationship between atherosclerosis and angina highlights the importance of coronary artery health in managing and preventing cardiovascular conditions.