vena cava

Noun
  1. Either of two large veins that return oxygen-depleted blood to the right atrium of the heart (synset 105430012)
    is a type of: vein, vena, venous blood vessel - a blood vessel that carries blood from the capillaries toward the heart
    subtypes:
    • inferior vena cava, postcava - receives blood from lower limbs and abdominal organs and empties into the posterior part of the right atrium of the heart; formed from the union of the two iliac veins
    • precava, superior vena cava - 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

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