contribute to the formation of the internal jugular veins and together with the common cardinal vein form the superior vena cava. In an anastomosis by anterior cardinal veins, the left brachiocephalic vein is produced[WP]

The anterior cardinal vein returns blood from the dorsal head and drains into the duct of Cuvier via the pronephric sinus.[AAO]

UBERON:0009770

uberon

rostral cardinal veins, ACV, superior cardinal vein, precardinal vein

In primitive vertebrates, the basic early embryonic pattern is retained, and blood from anterior and posterior systemic tissues is returned in anterior and posterior cardinal veins, both pairs of veins uniting in common cardinal veins near the heart. In derived vertebrates, the cardinals appear but usually persist only in the embryo, being functionally replaced by alternative adult vessels, the precava and postcava (anterior and posterior venae cavae).[well established][VHOG]

UBERON:0003087