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Other quiz:

Heart Anatomy › View

The purpose of heart valves is to

A. set the pace at which the heart beats

B. prevent blood from flowing backward

C. oxygenate the blood as it passes through the valve

D. add minerals to the blood

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Digestive System › View

one of the many tube-shaped structures that carry your blood and other bodily fluids

A. toxins

B. vessels

C. mucus

D. reflex

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