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

Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
References in periodicals archive ?
The venous system develops from three bilaterally symmetrical sets of veins in the embryo: the cardinal veins, the vitelline veins, and the left and right umbilical veins.
The inferior vena cava (IVC) regularly develops according to a complex process which involves three pairs of fetal veins: the posterior cardinal veins, subcardinal veins, and supracardinal veins [5].
Derived from three pairs of embryonic veins (cardinal veins, omphalomesenteric or vitelline veins, and umbilical veins), it primarily serves to direct a large volume of oxygenated blood from the placenta, past the liver, and directly into the right atrium.