How does blood flow through the hepatic portal system?
Blood passes from branches of the portal vein through cavities between “plates” of hepatocytes called sinusoids. Blood also flows from branches of the hepatic artery and mixes in the sinusoids to supply the hepatocytes with oxygen.
What is the path of blood from the hepatic portal vein to the right atrium?
Before reaching the heart the blood collected by the tributaries of the portal vein passes through the hepatic sinusoids. After traversing the sinusoids, blood is collected in the hepatic veins and flows to the right atrium.
What is the path of blood flow through the liver?
The liver receives a blood supply from two sources. The first is the hepatic artery which delivers oxygenated blood from the general circulation. The second is the hepatic portal vein delivering deoxygenated blood from the small intestine containing nutrients.
Where does the hepatic portal system carry blood to?
The hepatic portal system is a series of veins that carry blood from the capillaries of the stomach, intestine, spleen, and pancreas to capillaries in the liver. It is part of the body’s filtration system.
What does the hepatic portal vein deliver to the liver?
The portal vein is a blood vessel that delivers blood to the liver from the stomach, intestines, spleen, and pancreas. Most of the liver’s blood supply is delivered by the portal vein.
What is the function of the hepatic portal circulation in what way is a portal circulation a strange circulation?
Why “strange” circulation? The hepatic portal circulation functions to ensure that all blood draining the digestive system, and carrying nutrients from a recently digested meal, will pass through the liver before entering the rest of the circulation.
What is hepatic blood flow?
Blood leaves the liver through the hepatic veins. This blood is a mixture of blood from the hepatic artery and from the portal vein. The hepatic veins carry blood to the inferior vena cava—the largest vein in the body—which then carries blood from the abdomen and lower parts of the body to the right side of the heart.
How does the hepatic portal system work?
Sugars, amino acids, and simple lipid molecules pass from the enterocytes into the capillaries within the villi. From there, the capillaries empty into a prominent system of veins—the hepatic portal system—that drains the intestines, bringing all of the absorbed nutrients into the liver.
What drains into hepatic portal vein?
The portal vein or hepatic portal vein (HPV) is a blood vessel that carries blood from the gastrointestinal tract, gallbladder, pancreas and spleen to the liver.
What is the function of the hepatic portal vein?
A blood vessel that carries blood to the liver from the intestines, spleen, pancreas, and gallbladder.
What does the hepatic portal vein carry blood to?
The portal vein or hepatic portal vein ( HPV) is a blood vessel that carries blood from the gastrointestinal tract, gallbladder, pancreas and spleen to the liver. This blood contains nutrients and toxins extracted from digested contents.
What is the importance of the hepatic portal system?
They are called the hepatic (liver) and renal (kidneys) portal systems. The hepatic system is important because it collects blood from the intestine and passes it to the liver, the centre for many chemical reactions concerned with the absorption of food into the body and the control of substances….
What is the function of the hepatic portal circulation?
The function of the hepatic portal circulation is to route the venous blood (in this respect, deoxygenated blood) from the GI (gastro-intestinal) tract through the liver, before mixing it with venous blood from the rest of the body through the inferior vena cava, a short distance from the right atrium of the heart.
Is the hepatic portal vein nutrient rich?
Toggle Anatomy System. The hepatic portal vein provides the liver’s tissues with deoxygenated blood that has passed through the tissues of the stomach, pancreas, spleen, and intestines. This blood is rich in dissolved nutrients absorbed from digested food, as well as any toxins or medications consumed by the body.