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.
I do not no
To reduce pooling due to gravity.
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 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.