Question

why do hepatic portal vein carry digested food first to liver

Answer 1

the heptic artery carries blood from aorta to liver whereas portal vein carries blood containing the digested nutrient from the entire gastrointestinal tract,and also from spleen and pancreas to the liver.these blood vessels subdivided into cappillaries that then leads to lobule

Answer 2

Hepatic portal vein carry digested food first to liver as it acts like a store to regulate the quantity of nutrients flowing into the general blood circulation.For example,excess sugar is stored as glycogen.It is also carried first to liver so that any poisons if absorbed through food are detoxified in the liver.