The limited interconnections among coronary arteries imply what when a blockage occurs?

• A. Blood can detour around blockages easily.
• B. Blockages do not affect blood supply.
• C. Blockages can lead to serious complications since blood cannot detour.
• D. Blockages only affect veins.

Answer: (C)

Limited interconnections among the coronary arteries mean the heart’s blood supply has little redundancy. Many heart regions rely on a single artery, with few alternative routes for blood to reach them if a blockage occurs. When flow is blocked, the affected myocardial tissue can’t be perfused adequately, leading to ischemia and, if not quickly relieved, myocardial infarction. Collateral vessels can form in some people, but they’re often insufficient to prevent serious complications. So blockages can lead to serious outcomes because there isn’t a reliable detour for blood to reach the blocked area.