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What is the largest vein in the human body?

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Answer: Veins:

Veins are blood vessels that bring deoxygenated blood to the heart, except carrying deoxygenated blood to the heart, except in the pulmonary vein.

The human body’s largest vein:

  • The vena cava is the largest vein inside the human body, consisting of superior as well as inferior vena cava.
  • The inferior vena cava runs parallel to the right-hand side of the vertebral column, posted towards the abdominal cavity.
  • This vein returns deoxygenated blood from the middle and lower body to the heart’s right atrium of the heart.
  • The superior vena cava transports deoxygenated body fluids from the upper—body to the right side of the heart’s atrium of the heart.