Cardinal veins

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Related to anterior cardinal veins: posterior cardinal vein, common cardinal veins
(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 ?
DISCUSSION: The thoracic embryonic venous system is composed of anterior cardinal veins which drain the cephalic part of the embryo and posterior cardinal veins which drain the caudal part of embryo.
The cephalic parts of anterior cardinal veins form the internal jugular veins and the caudal part of the right anterior cardinal vein develop into the normal right superior vena cava (RSVC).
During normal development, the anterior cardinal veins, which drain the head, neck, and arm, unite with the posterior cardinal vein in the very early embryonic stage and enter the heart as the right and left horns of the sinus venosus.

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