University:
Michigan State University
Course:
ANTR 211 | Human Tissues and Cells for Medical Illustrators
Academic year:

2020
Views:

47

Pages:

3
Author:

hekeldigzjbz

Hepatic Portal Circulation The liver receives venous blood from the digestive tract, which is oxygen poor but nutrient rich. The liver filters the blood: 1) detoxifying alcohol and drugs, 2) converting ammonia to usable urea, 3) storing fat-soluble vitamins, 4) converting glucose to glycogen and storing it. Phagocytes, called Kupffer cells, lining the liver’s sinusoids, filter out any remaining bacteria that survived the trip through the stomach. After percolating through the liver (the hepatic portal system), the blood drains into the hepatic veins and then into the inferior vena cava. It is now back in systemic circulation and on its way back to the heart and lungs. The blood from the digestive organs is brought to the liver through the hepatic portal vein. The hepatic portal vein is only about 3 inches (8 cm) long. It receives blood from the following blood vessels: 1) superior mesenteric vein - which collects blood from the stomach, small intestine and the ascending and transverse portion of the large intestine. 2) splenic vein - which collects blood from the spleen, pancreas and part of the stomach. 3) inferior mesenteric vein - which collects blood from the descending colon, sigmoid colon and the rectum. inferior vena cava hepatic vein esophagus Hepatic Portal Circulation liver stomach hepatic portal vein gall bladder as cre n a p common bile duct duodenum (small intestine) superior mesenteric vein ascending colon descending colon cecum appendix ileum rectum anus inferior mesenteric vein sigmoid colon inferior vena cava hepatic vein esophagus Hepatic Portal Circulation (with intestines cut out to see blood vessels) liver stomach hepatic portal vein gall bladder s rea c n pa common bile duct duodenum (small intestine) superior mesenteric vein ascending colon descending colon cecum appendix ileum rectum anus inferior mesenteric vein sigmoid colon