What is a tortal circulation?
Portal circulation is a flow of blood from one organ to another without going through the heart. This term is most often used to indicate how blood moves in the vein network in the intestines and digestive organs such as the spleen and the pancreas, and is transmitted to the liver. This particular system is known as the liver portal system, although it is sometimes - and somewhat inaccurate - called the portal venous system.
The blood in the liver portal system contains all nutrients absorbed by the digestive tract, which can then be processed by the liver. Useful substances can be modified for use or storage, while harmful substances are removed and can be converted into less toxic forms. Sometimes obstacles occur in portal circulation and pressure guidance, leading to a condition known as portal hypertension. These capillaries discharge the digestive system, all the way from the lowest part of the esophagus to the last part of the intestine, which leads to the rectum. Similar networks of the capillary will release pancreas, spleen and gallbladder.
After leaving the capillaries, blood in the portal circulation empties into larger veins. Splenic vein throws the spleen and superior and lower mesenteric veins carry blood from the large and small intestine. The veins known as true and left stomach veins take blood from the stomach and esophagus, while the gallbladder is exhausted by cystic veins. All these veins empty into a larger blood vessel known as a portal vein that are divided into the left and right branches that enter the liver.
inside the liver, the circulation of the portal flows into spaces known as liver sinusoids, where glucose and other sugars are processed. Any excess amino acids, building blocks of proteins are removed and used to produce a substance called urea. This is later processed by the kidneys and excluded from the body of the urine. In sinusoids, the cells of the immune system are present that remove harmful microbes from the blood.
after the passage of portal circulation and liver withBlood drains into the left or right liver vein. The liver veins leave the liver and empty into a vein called Lower Vena Cava, which is part of the systemic blood circulation that carries blood back to the heart. From the lower vena Cava, the blood is supplied to the right upper chamber of the heart or right atrium before it is fired from the right lower ventricle or chamber, to the lung circulation of the lungs, where oxygen is added.