Passively. Blood flows in the inferior vena cava because the pressure in the right atrium is lower than the pressure in the vena cava. Blood flows along this pressure gradient to return to the heart.
The inferior vena cava brings blood from the major organs (excluding the brain) back to the heart
The inferior vena cava brings blood back to the heart from the lungs.
The superior and inferior vena cava.
superior and inferior vena cava
The vena cava (both) are very large veins. All veins carry blood back to the heart. In the case of the vena cava, this is blood from the upper body (superior vena cava) and from the lower body (inferior vena cava).
Inferior vena cava and superior vena cava carries the deozygenated blood from the body to the heart. The pulmonary artery carries blood to the lungs from the heart. the pulmonary VEINS carry blood to the heart from the lungs.
inferior vena cava
The inferior vena cava is the largest vein, and connects to the right atrium of the heart. The other large vein is the superior vena cava, which receives blood from the upper half of the body.
The Inferior vena cava - just like the Superior vena cava -, returns blood to the heart. When blood is returning to the heart, that blood is already circulated in the body, therefore it is already downloaded the oxygen to the body tissues, and picked up the carbon dioxide from them. From the vena cava (superior and inferior), the blood enters the heart (right atrium), is pumped into the right ventricle, and then pumped into the lungs (through the Pulmonary Arteries), where carbon dioxide is exchanged for oxygen. So, the blood in the vena cava is deoxygenated.
Inferior vena cava and superior vena cava.
The inferior vena cava is the major vein which carries the blood into the heart from the lower half of the body.
The inferior vena cava brings blood from the lower parts of the body to the heart. The blood is deoxygenated.