The vascular system Biology Diagrams The portal vein, formed by the mesenteric and splenic veins, supplies 70% of the blood to the liver. Blood from the portal vein blood contains absorbed nutrients (such as glucose, fatty acids and amino acids) from the GI tract. Firstly, oxygen is delivered to the hepatic circulation from both of these arteries. Your hepatic portal system (portal venous system) is an exception to this rule. The veins in this system send blood to your liver, rather than directly to your heart. Your portal vein is the main blood vessel in this system. To understand your portal vein and its job, it helps to learn a bit about your portal venous system. Portal venous system
The hepatic portal system is the system of veins comprising the hepatic portal vein and its tributaries. The liver consumes about 20% of total body oxygen when at rest, so the total liver blood flow is quite high. Blood flow to the liver is unique in that it receives both oxygenated and partially deoxygenated blood.
Hepatic Vein: Location, Anatomy & Function Biology Diagrams
Large veins that are considered part of the portal venous system are the: . Hepatic portal vein; Splenic vein; Superior mesenteric vein; Inferior mesenteric vein; The superior mesenteric vein and the splenic vein come together to form the actual hepatic portal vein.The inferior mesenteric vein connects in the majority of people on the splenic vein, but in some people, it is known to connect on
Note enlargement of the hepatic vein due to increased flow directly drained from the PVS to its lumen, skipping the hepatic parenchyma. Other iatrogenic findings may result from post-surgical changes. Liver surgery mainly consists in anatomical-oriented resections, based on the intrahepatic distribution of portal branches and hepatic veins .
Hepatic portal system Biology Diagrams
The portal vein, or hepatic portal vein, is the main blood vessel of the portal venous system (PVS), which delivers blood to the liver from the stomach, intestines, spleen, gallbladder, and pancreas. Patients with refractory ascites or GI bleeding may benefit from the surgical placement of shunts between the portal and systemic circulation
