cardinal vein


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cardinal vein

Along with the umbilical and the vitelline veins, the cardinal veins form one of the three venous systems of the early embryo. The cardinal veins return blood to the heart from the body of the embryo, and they are the precursors of the major thoracic veins, including the subclavian, brachiocephalic, azygos, internal jugular veins, and the superior vena cava.
See also: vein
References in periodicals archive ?
Duplication of IVC arises as a result of the persistence of the right and left supra cardinal and sub cardinal veins (2).