How do veins prevent backflow of blood?
Veins are vessels which carry blood from organs to heart. Veins have valves in their inner linings to prevent backward flow of blood.
Veins have valves to prevent the backflow of blood because the blood in veins flow ________.
Which of the following help veins to prevent the backflow of blood?
Valves are found in veins to check the backflow of blood flowing under