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Which of the following BEST describes varicose veins? A. Veins cannot prevent the backflow of blood. B. Veins lose the ability to transport blood to the heart. C. Veins become used for transporting
blood to and from the heart. D. Veins become less efficient at transferring waste to the blood. Please select the best answer from the choices provided
Veins cannot prevent the backflow of blood.
Expert answered|jeifunk|Points 8431|
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Asked 1/18/2013 8:00:21 AM
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What distinguishes a heart attack from heart failure. A. A heart attack results from poor blood flow, while heart failure involves a total interruption of blood flow. B. Both heart attack and heart failure result in heart tissue death, but more tissue dies as a result of heart failure. C. Heart tissue dies during a heart attack, while heart failure results in systemic oxygen deficiency. D. Heart failure results in body tissues receiving such a high level of oxygen that it is toxic. Please ...
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Asked 1/11/2013 7:52:55 AM
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