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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For years we have been taught the warning signs of a heart attack and what we are now learning is that these are great for men. Will... Read more »
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 »
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 »
Source: ADAM Encyclopedia
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Source: HealthCentral Encyclopedia
A heart attack, also known as a myocardial infarction (MI), generally occurs when there is a blockage of blood flow to the heart, resulting in the... Read more »
Source: ADAM Encyclopedia
A heart attack is when blood vessels that supply blood to the heart are blocked, preventing enough oxygen from getting to the heart. The heart muscle... Read more »