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medical overview

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Question
Answer
Atria   Upper chambers of the heart  
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Coronary arteries   Blood vessels that supply blood to the myocardium  
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Atrioventricular node   Electrical impulses slow here to allow blood to move from the atria to the ventricles  
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Myocardium   Heart muscle  
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Sinus node   Electrical pulses begin here  
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Vena cava   Carry O2 poor blood back to the heart  
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Ventricles   Lower chambers of the heart  
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Aorta   Body’s main artery  
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Atherosclerosis   Calcium and cholesterol buildup inside blood vessels  
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Arrhythmia   Abnormal heart rhythm  
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Ischemia   Lack of O2  
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Infarction   Tissue death  
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Tachycardia   Rapid heart rhythm, greater than 100 bpm  
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Asystole   Absence of heart electrical activity  
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Bradycardia   Unusually slow heart rhythm, less than 60 bpm  
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Thromboembolism   Blood clot floating through blood vessels until it reaches a narrow area and blocks blood flow  
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