Cardinal veins

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Related to Cardinal veins: common cardinal vein, posterior cardinal vein
(Anat.) the veins in vertebrate embryos, which run each side of the vertebral column and returm the blood to the heart. They remain through life in some fishes.

See also: Cardinal

References in periodicals archive ?
This process is preceded by anastomoses between the posterior cardinal veins, draining the blood flowing from the body wall caudal to the heart, and the subcardinal veins.
Embryologically, the systemic veins of our body develop from the intra-embryonic anterior and posterior cardinal veins, while the portal system develops from the extra-embryonic vitelline and umbilical veins which drain from the yolk sac and the placenta.