Inferior Vena Cava."The development of the inferior vena cava is associated with the formation of two veins, the subcardinal veins (Figs. 477, 478).
The functional lobes are separated by a plane joining the gallbladder fossa to the inferior vena cava. This separates the liver into the true right and left lobes. The middle hepatic vein also demarcates the true right and left lobes.
Right atrium receives blood from superior and inferior vena cava
Blood flows from right atrium, across tricuspid valve, into right ventricle
Muscle of right ventricle is not as thick as left ventricle ...
Veins draining the upper portion of the body lead to the superior vena cava.
Veins draining the lower part of the body lead to the inferior vena cava.
Both empty into the right atrium.
Link to discussion of the control of the heartbeat.
A large vein that brings blood from the tissues to the right atrium of the four-chambered mammalian heart. The superior vena cava collects blood from the forelimbs, head, and anterior or upper trunk; the inferior vena cava collects blood from the ...
 See also: Human, Vena cava, Anatomy, Arteries, Vessels
  
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