Answer:
Hepatic portal system is the veins, consists of the tributaries and hepatic portal vein.
Step-by-step explanation:
Hepatic portal system transfers blood from the parts of gastrointestinal tract to the liver. The components of hepatic portal system are hepatic portal vein, superior mesentric vein, inferior mesenteric vein and splenic vein.
The absorbed product of the small intestine first reach to the liver through the hepatic portal system. The lower portion of the esophagus to the upper part of ana.l canal is involved in this system.