To reduce pooling due to gravity.
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.
Nothing, it is only pressure that keeps blood moving in the right direction in arteries. Veins have valves that prevent backflow of blood, but arteries do not.
veins have valves. y
Valves can be found in the heart aswell as the veins
The blood in veins is not under direct pressure from the heart. It has little valves inside to prevent blood from flowing backwards away from the heart. These valves inside the veins prevent the backflow of blood in veins. They encourage the one-directional flow of blood to the heart.
I do not no
I don't know what it is. I'm sorry :(
Valves in the peripheral veins prevent blood from backflow during the off beat of the heart. If not for the valves, the flow of blood would tend to pool at the extremities.
The valves stop the blood flowing backwards through the circulatory system.
The valves help the blood to go in one direction against gravity up towards the heart and prevent it from reluxing down. In case these valves malfunction varicose veins occur.
The valves help to prevent blood from seeping backwards. They provide a one way valve. When valves begin to fail blood may become stagnant and cause unsightly varicose veins - usually in the legs..
The valves help to prevent blood from seeping backwards. They provide a one way valve. When valves begin to fail blood may become stagnant and cause unsightly varicose veins - usually in the legs..
The valves help to prevent blood from seeping backwards. They provide a one way valve. When valves begin to fail blood may become stagnant and cause unsightly varicose veins - usually in the legs..
The valves help to prevent blood from seeping backwards. They provide a one way valve. When valves begin to fail blood may become stagnant and cause unsightly varicose veins - usually in the legs..
They would be considered incompetent valves because they are not working properly. You need all the vein valves to work properly for maximum functioning.
Vena Cava has valves, if im not wrong, but pulmonary veins definitely do not have valves.
To stop the blood travelling the wrong way down the vein. One way system lol.