Biology, asked by scpdahi45, 6 hours ago

why the blood can't flow back in a blood vessel

Answers

Answered by mufiahmotors

Answer:

Blood primarily moves in the veins by the rhythmic movement of smooth muscle in the vessel wall and by the action of the skeletal muscle as the body moves. Because most veins must move blood against the pull of gravity, blood is prevented from flowing backward in the veins by one-way valves.

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