a flap of tissue that prevants blood from flowing backward is
valve
The valve
In the heart/arteries, the Aortic valve prevents blood from flowing backwards. In the systemic veins, eustachean valves prevent the backwards flow of blood.
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The bicuspid valve is the valve that separates the left ventricle from the aorta.
your skin of course!
The flap of tissue that prevents blood from flowing backward is called a valve. Valves are found in veins and in the heart to ensure that blood flows in one direction and does not pool or backflow.
valves in the veins
heart valves
the valves
valve
valve
Venous valves .
Venous valves .
Valves. Mitral and aortic.
Venous valves .
Blood is a constant whereabout in our bodies. As of such a frequent heartbeat exists within our system. Which causes the blood within our bodies to flow forward, in lamense terms it produces a very large push for the blood to distribute it's nutrients throughout the body and back within our heart and out again. This constant push is what prevents blood from flowing backwards in your veins.