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vitelline vein

   Also found in: Encyclopedia, Wikipedia 0.01 sec.
vitelline vein,
any of the embryonic veins that return blood from the yolk sac to the primitive heart of the early developing embryo. Also called omphalomesenteric vein.


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The portal vein forms from the most cranial portion of the right vitelline vein, the middle anastomosis, and the caudad portion of the left vitelline vein following regression of the remaining portions of the venous plexus.
 
 
 
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