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Blood moving through veins can only flow in one direction because of the vein's _____. valves pressure contraction restrictions
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Sep 21, 2017
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Blood moving through veins can only flow in one direction because of the vein's _____.
valves
pressure
contraction
restrictions
Biology
high-school
Xu Yin
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Xu Yin
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Answer:
valves
Step-by-step explanation:
They act like doorways
Eric Niebler
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Sep 22, 2017
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Eric Niebler
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valves , they let the blood flow in one direction only .
Tam Bui
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Sep 28, 2017
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Tam Bui
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