1. Starting from the intestines and ending at the heart, describe blood flow through the portal system (naming major vessels and structures you pass along the way) AND WHY BLOOD FLOWS THROUGH THE LIVER (detail the function of the liver). Include the names of vessels as you travel through them in the proper order. After, describe What produces bile (which cells), the pathway it takes back to the GI tract, and its function (should include an enzyme).
3 main veins come together to form the hepatic portal vein and bring blood to the liver: Superior Mesenteric, Splenic, and the Inferior mesenteric. 1. Superior Mesenteric vein – drains the entire small intestines (can I just put small intestines or do you want it more specific like: intestinal veins, pancreaticoduodenal vein etc. ) stomach and part of the large intestine 2. Splenic vein- collects blood from the spleen, parts of the stomach and pancreas, then joins the superior mesenteric to form the hepatic portal vein. 3. Inferior mesenteric – drain the distal portion of the large intestine and rectum and connects with the splenic vein, before that vessels unites with the superior mesenteric vein.
Functions of the liver: produce bile, detoxify the blood, storage for nutrients, synthesize plasma proteins and break down RBC’s
Following nutrient absorption the blood exits through hepatic veins that merge with the inferior vena cava.
Hepatocytes in the liver produce bile, and bile is stored in the gallbladder. To get into the GI tract. The common hepatic duct and cystic duct form the common bile duct and enters the duodenum through the hepatopancreatic ampulla. Bile helps by emulsifying fats and breaking down into smaller particles so that the lipase enzyme (produced by the pancreas) can degrade it.
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