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Andreas93 [3]
3 years ago
8

Blood pressure in veins is lower than in arteries, so a series of ________ are necessary to prevent backflow of blood.

Health
1 answer:
jolli1 [7]3 years ago
7 0
<span>A series of ONE-WAY VALVES </span>are necessary to prevent backflow of blood when b<span>lood pressure in veins is lower than in the arteries.</span>
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