superior vena cava

Definitions of superior vena cava
  1. noun
    receives blood from the head and arms and chest and empties into the right atrium of the heart; formed from the azygos and both brachiocephalic veins
    synonyms: precava
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    type of:
    vena cava
    either of two large veins that return oxygen-depleted blood to the right atrium of the heart
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