superior vena cava Blood from the head returns to the heart through this main vein.
Superior vena cava SVC carries blood from head, upper chest and arms
Inferior vena cava IVC carries blood from lower chest, abdomen and legs ...
The superior vena cava returns the blood from the upper half of the body, and opens into the upper and back part of the atrium, the direction of its orifice being downward and forward. Its opening has no valve.
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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; ...
Some highly concentrated fluids or irritating medications must flow into the large central veins, which are sometimes used when peripheral access cannot be obtained. Catheters can be threaded into the superior vena cava for these uses: if long term ...
Collection of fluids begins at the capillaries of the circulatory system and then the fluid directed through a series of vessels that become the thoracic duct. That duct is connected to the largest vein in your body, the superior vena cava, ...
 See also: Vena cava, Heart, Atrium, Human, Class
  
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