veins have what that prevent the blood from flowing backwards
Answers
Answered by
4
Answer:
PLS MARK AS THE BRAINLIEST
Explanation:
VALVES ARE PRESENT IN THE VEINS WHICH PREVENT THE BLOOD FROM FLOWING BACKWARDS
Answered by
1
Answer:
valves
Explanation:
Veins contain a series of one-way valves. As the vein is squeezed, it pushes blood through the valves, which then close to prevent backflow.
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