Function of the Hepatic Portal System

The function of Hepatic Portal Systems is:

  • At first, the nutrients are processed by the liver, which also controls the quantity of nutrients that can reach the circulation. For example, the liver stores extra glucose as glycogen when it surges after a meal due to the breakdown of carbohydrates.
  • During a fast, the body changes glycogen back into glucose, which is then released into the bloodstream. In other words, the liver prevents excessive fluctuations in blood sugar levels by maintaining a balance.
  • The liver is another organ where the free amino acids from digesting proteins are utilized to create new proteins and pro-enzymes.
  • Excess amino acids are broken down to urea to be eliminated from waste or transformed into other energy-storing molecules, both of which can be hazardous.
  • This brings us to the second function of the liver as a detoxification organ. The liver screens the blood for potentially toxic substances and pathogens and removes them before they can reach the rest of the body.

Hepatic Portal System

In the Hepatic Portal System, the blood is transferred from abdominal organs directly to the liver through a network of veins. As a result, chemicals ingested from the digestive tract are initially accessible to the liver. These organs include the lower esophagus, stomach, small intestine, large intestine, spleen, pancreas, and gallbladder. The hepatic portal vein is the largest vessel of the hepatic portal system. It is formed by the union of the splenic and superior mesenteric veins. The splenic vein drains the spleen, pancreas, and portions of the large intestine.

Table of Content

  • What is a Portal System?
  • What is the Hepatic Portal System?
  • Veins that make up the Hepatic Portal System
  • Anatomy of the Hepatic Portal System
  • Hepatic Portal System Diagram
  • Function of the Hepatic Portal System
  • Significance Of Hepatic Portal System

Similar Reads

What is a Portal System?

A Portal System is a system of blood vessels that has a capillary network at each end. In other words, a portal system is an arrangement of blood vessels such that blood passes from a capillary bed into larger blood vessels and then into another capillary bed. Ordinarily, blood flows from a capillary bed into the venous system and eventually back into the heart. In the case of a portal system blood flows from a capillary bed into the venous system but then flows through another capillary bed before returning to the heart....

What is the Hepatic Portal System?

In the Hepatic Portal System, venous drainage from most of the gastrointestinal tract, the spleen, and the pancreas, pools into the portal vein to reach the liver, before returning to the heart. This way, all substances absorbed through the GI tract, including nutrients, toxins, and pathogens, are first processed in the liver before they can reach the general circulation....

Veins that make up the Hepatic Portal System

These are the veins that collectively make a hepatic portal system:...

Anatomy of the Hepatic Portal System

It is the hepatic portal vein that receives blood from the organs of the gastrointestinal tract and provides blood to the liver. More specifically, the inferior mesenteric vein and the small gastric vein drain into the splenic vein, and the splenic vein drains into the hepatic portal vein. The superior mesenteric vein, right gastric vein, and left gastric vein all drain into the hepatic portal vein. Thus the hepatic portal vein receives venous blood from the stomach the small intestines, and the large intestine as well as venous blood from the gallbladder, spleen, and pancreas....

Hepatic Portal System Diagram

The following is a labelled diagram of hepatic portal system:...

Function of the Hepatic Portal System

The function of Hepatic Portal Systems is:...

Significance Of Hepatic Portal System

Hepatic Portal System is important because of the following reasons:...

FAQs on Hepatic Portal System

1. What are the Three Portal systems Found in the Human Body?...

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