A stroke is an interruption of blood flow to the brain. Your blood, heart, and blood vessels are th...
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A stroke is an interruption of blood flow to the brain. Your blood, heart, and blood vessels are the three main parts of your circulatory system. Your heart pumps your blood and keeps it moving throughout your body. Your blood travels through your blood vessels, transporting nutrients and oxygen to cells and removing waste. Sometimes a blood vessel develops a weakened, ballooning area called an aneurysm. This weakened area can burst. A hemorrhagic stroke occurs when a weakened blood vessel in part of your brain leaks or bursts. When the flow of blood and oxygen to the brain is interrupted for longer than a few seconds, brain cells can die. Brain cells can also be damaged by bleeding into the brain. A stroke is an emergency that requires immediate medical treatment.