All parts of the circulatory system can be vulnerable to blockages, but certain areas are more commonly affected:
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Arteries: This is the most common site for blockages, especially in conditions like atherosclerosis, where plaque builds up on the artery walls, restricting blood flow. Blockages in arteries can lead to serious health issues, such as heart attacks or strokes.
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Veins: While they can also be affected, blockages typically manifest as conditions like deep vein thrombosis (DVT), where a blood clot forms in a vein, usually in the legs.
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Heart: The coronary arteries supply blood to the heart muscle itself, and blockages here can lead to coronary artery disease and heart attacks.
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Capillaries: While they are tiny blood vessels and not generally the site of blockages in the same way as arteries or veins, they can be affected in certain diseases (like diabetes) that cause issues with blood flow.
In summary, while all parts can be affected, arteries are most commonly recognized as being vulnerable to blockages.