What 3 structures make up the portal triad?
The hepatic artery proper, common bile duct, and portal vein run through the ligament near its free edge to reach the liver. These three structures are often referred to as the portal triad.
What are the major branches of the 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....Portal veinDrains fromGastrointestinal tract, spleen, pancreasSourcesplenic vein, superior mesenteric vein, inferior mesenteric vein, pancreatic vein11 more rows
What is the structure of the hepatic portal system?
The hepatic portal vein is formed by the confluence of three main vessels, the gastric, pancreaticomesenteric, and lienomesenteric veins. They unite to form the hepatic portal vein near the anterior tip of the dorsal lobe of the pancreas.
What structure is in the middle of the hepatic lobule?
central veinSituated around the perimeter of the lobule are branches of the hepatic artery, hepatic portal vein and bile duct. These cluster together at the "corners" of the lobule forming what is called the portal triad. At the mid-point of the lobule is the central vein.
Where is the hepatic portal vein located quizlet?
Formed from smaller veins that drain the Small Intestine, Cecum and the Large Intestine to the midpoint of the Transverse Colon. Drains the Remainder of the Colon and Rectum not completed by the SMV. Courses upward towards the Liver and passes the Pancreas to join with the Splenic Vein.
Where is hepatic portal vein located?
The hepatic portal vein is a vessel that moves blood from the spleen and gastrointestinal tract to the liver. It is approximately three to four inches in length and is usually formed by the merging of the superior mesenteric and splenic veins behind the upper edge of the head of the pancreas.
Is the hepatic vein part of the hepatic portal system?
What is the role of the hepatic portal vein? The hepatic portal vein is the part of the hepatic portal system. It carries blood from the intestines, gallbladder, pancreas and spleen and delivers it to the liver. It contains blood with nutrients and toxins after digestion.
Why does the liver have a hepatic portal vein and an hepatic vein quizlet?
1) The Hepatic Portal Vein brings oxygen-depleted blood from the small intestine. 2) The Hepatic Artery brings oxygen-filled blood to the liver.
What is the hepatic portal system quizlet?
Collects blood from the veins of the pancreas, spleen stomach, intestines & gallbladder & directs it into the Hepatic Portal vein of the liver before it returns to the heart. Carries blood between two capillary networks. HPS carries from capillaries of gastrointestinal tract to sinusoids of liver.
Where is bile duct located?
About the bile ducts The bile ducts are a series of thin tubes that go from the liver to the small intestine. Their main job is to allow a fluid called bile to go from the liver and gallbladder into the small intestine, where it helps digest the fats in food.
What are the hepatic ducts?
A tube that carries bile from the liver. It starts where the right and left hepatic (liver) ducts join outside the liver. It ends where the cystic duct from the gall bladder joins it to form the common bile duct.
What is the hepatic lobule?
The hepatic lobule is the anatomic unit of the liver. In the anatomic model, liver lobules are organized into irregular polygons demarcated by connective tissue and composed of plates of hepatocytes radiating outward from the central vein to the portal triads (Figure 61-1).
What is the grouping of bile ducts, hepatic arteriole and portal ven
Bile ducts thus begin in very close proximity to the terminal branches of the portal vein and hepatic artery, and this group of structures is an easily recognized and important landmark seen in histologic sections of liver - the grouping of bile duct, hepatic arteriole and portal venule is called a portal triad.
What is the connective tissue tree in the liver?
The liver is covered with a connective tissue capsule that branches and extends throughout the substance of the liver as septae. This connective tissue tree provides a scaffolding of support and the highway which along which afferent blood vessels, lymphatic vessels and bile ducts traverse the liver.
What is the first channel in the biliary system?
The basal faces of adjoining hepatocytes are welded together by junctional complexes to form canaliculi, the first channel in the biliary system. A bile canaliculus is not a duct, but rather, the dilated intercellular space between adjacent hepatocytes.
What is the biliary tree?
The biliary tree, which is a system of ducts that transports bile out of the liver into the small intestine. The three dimensional arrangements of the liver cells, or hepatocytes and their association with the vascular and biliary systems. The Hepatic Vascular System.
Where is the liver located?
The liver lies in the abdominal cavity, in contact with diaphragm. Its mass is divided into several lobes, the number and size of which vary among species. In most mammals, a greenish sac - the gallbladder - is seen attached to the liver and careful examination will reveal the common bile duct, which delivers bile from the liver ...
Where does blood flow through the sinuses?
Blood flows through the sinusoids and empties into the central vein of each lobule.
Where does the liver get its nutrients from?
One consequence of this is that the liver gets "first pickings" of everything absorbed in the small intestine, which, as we will see, is where virtually all nutrients are absorbed.