<P> The inferior vena cava ( or IVC ) is a large vein that carries deoxygenated blood from the lower and middle body into the right atrium of the heart . Its walls are rigid and has valves so the blood does not flow down via gravity . It is formed by the joining of the right and the left common iliac veins , usually at the level of the fifth lumbar vertebra . </P>
<P> The inferior vena cava ( or IVC ) is a large vein that carries deoxygenated blood from the lower and middle body into the right atrium of the heart . Its walls are rigid and has valves so the blood does not flow down via gravity . It is formed by the joining of the right and the left common iliac veins , usually at the level of the fifth lumbar vertebra . </P>
the superior and inferior vena cava bring blood into the
the superior and inferior vena cava bring blood into the
right atrium of the heart
right atrium of the heart