Question

Veins have a much lower blood pressure than arteries. Which of these prevents backflow of blood in veins?

Answer 1

help mee

Answer 2

low iron and vinc in veins also cholesterol and blackflow the blood

Answer 3

No, veins actually have valves that prevent blood from moving backwards in the veins. Also, our muscles push blood in veins to move; this is why if you sit long enough or in an odd way you can have weakness and/or sometimes pass out.