Question

What is the hepatic portal system?

Answer 1

Hint: The portal system starts with the digestive system's capillaries and venules. The portal vein takes venous blood from the lower oesophagus, stomach, duodenum, jejunum, ileum, colon, and spleen and transports it to the liver. As a result, the compounds absorbed by the digestive system are found in portal blood.

Complete answer:
The hepatic portal system consists of the hepatic portal vein and its tributaries, as well as other veins. It is in charge of guiding blood from the gastrointestinal tract between the oesophagus and the rectum, as well as venous drainage from auxiliary organs like the spleen and pancreas.

The venous system that returns blood from the digestive tract and spleen to the liver is known as the hepatic portal system (where raw nutrients in blood are processed before the blood returns to the heart). It essentially drains the structures supplied by the celiac, anterior mesenteric, gastrosplenic, and posterior mesenteric arteries (excluding the gonads).

 As a result, many of the branches of the hepatic portal system closely follow the branches of these arteries, making it easy to investigate them after you've identified the arteries. The hepatic portal system is injected with yellow latex in some specimens, making it much easier to observe.

The hepatic portal vein, a large vein that runs alongside the hepatic artery and the anterior section of the bile duct in the gastro hepatoduodenal ligament, is the major vessel of the hepatic portal system. The gastric, pancreatic mesenteric, and lien mesenteric veins meet at the hepatic portal vein to produce the hepatic portal vein.

Near the anterior point of the pancreas' dorsal lobe, they join to form the hepatic portal vein. Remember that the celiac artery also separates into branches near this point. The gastric and lienomesenteric veins occasionally connect to produce a very small conduit, which subsequently joins the pancreatic mesenteric to form the hepatic portal vein.

It is normally created by the joining of the superior mesenteric and splenic veins behind the upper margin of the pancreas head, and it is three to four inches long. It's remarkable in that it delivers partially digested meals.

Note:
The liver filters all of the blood that leaves the stomach and intestines. The liver processes blood, breaking down, balancing, and creating nutrients, as well as metabolising medications into forms that are easier to use or harmless for the rest of the body. The superior vena cava is a big vein that transports blood from the head and arms to the heart, whereas the inferior vena cava transports blood from the abdomen and legs.