重複下大静脈とは 下大静脈拡大 原因 DentalCoalition
The inferior vena cava originates at the confluence of the common iliac veins at the level of the fifth lumbar vertebra (L5). It ascends in the retroperitoneal space, to the right of the vertebral column, and passes through the diaphragm at the level of the eighth thoracic vertebra (T8) to enter the right atrium.The major tributaries of the inferior vena cava include:Hepatic veins (last.