The heart is the human body's hardest working organ. Throughout life it continuously pumps blood enriched with oxygen and vital nutrients through a network of arteries to all tissues of the body. To perform this strenuous task, the heart muscle itself needs a plentiful supply of oxygen-rich blood, provided through a network of coronary arteries. These arteries carry oxygen-rich blood to the heart's muscular walls (the myocardium).
A heart attack (myocardial infarction) occurs when...
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How It HappensThe heart pumps blood enriched with oxygen and vital nutrients throughout the entire body by way of a network of arteries. The heart... Read more »
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If you are with someone who is experiencing these symptoms and cannot reach 911, drive them to the hospital immediately. If you are experiencing the... Read more »
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German researchers say persistent depression after a heart attack may be due to changes in the anterior cingulate cortex in the brain. Depression is... Read more »