once out of the gut the nutrients enter the hepatic poral system
the largest number of capillaries and blood vessels drain the digestive system
low oxygen nutrient rich
Hepatic portal vein Splenic vein Superior mesenteric vein Inferior mesenteric vein
Hepatic portal veinEdit
The hepatic portal vein is not a true vein, because it does not conduct blood directly to the heart. It is a vessel in the abdominal cavity that drains blood from the gastrointestinal tract and spleen to capillary beds in the liver.
Portal hypertension is a condition in which the blood pressure of the portal venous system is too high. It is often the result of cirrhosis of the liver.