Definition for Portal vein
From Biology Forums Dictionary
A vein that not only collects blood from capillaries—like all veins—but also forms another set of capillaries, as opposed to returning the blood directly to the heart like other veins.
From Biology Forums Dictionary
A vein that not only collects blood from capillaries—like all veins—but also forms another set of capillaries, as opposed to returning the blood directly to the heart like other veins.
