if the valves failed then the blood would go in the wrong direction.
Valves are found in the heart and in some veins.
Valves in the circulatory system prevent blood from flowing into the wrong compartments. Valves also regulate the amount of blood that can be held in one compartment of the heart over a certain period.
veins
The valves stop the blood flowing backwards through the circulatory system.
To maintain the flow of blood in one direction
tom dunsdon
So blood doesn't flow backwards.
the heart and the veins
The valves keep blood flowing in one direction. And there are even valves in the veins. The system is called a circulatory system and the system must keep going in a circle to function properly.
Circulatory system are connected by a network of arteries, veins and capillaries. They connect the body with heart. Inside the heart, various valves connect different chambers.
welll I guess so blood doesn't flow backwards.
Valves can be found in the heart. They sit between the Atria and the Ventricles and help aid cardiovascular activity.