单词 | portal system |
释义 | portal systemnoun Anatomy 1The system of blood vessels consisting of the hepatic portal vein with its tributaries and branches.The fact that veins can be seen is not useful, but the direction of blood flow in visible veins can be useful information because these veins connect to the portal system through the umbilical vein....
1.1Any system of blood vessels which has a capillary network at each end. |
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