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.