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Blood moving through veins can only flow in one direction because of the vein's _____. valves pressure contraction restrictions

Blood moving through veins can only flow in one direction because of the vein's _____. valves pressure contraction restrictions
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Blood moving through veins can only flow in one direction because of the vein's _____.

valves
pressure
contraction
restrictions

asked
User Xu Yin
by
8.4k points

2 Answers

5 votes

Answer:

valves

Step-by-step explanation:

They act like doorways

answered
User Eric Niebler
by
7.4k points
2 votes
valves , they let the blood flow in one direction only . 
answered
User Tam Bui
by
7.4k points
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