The hepatic portal system drains blood from the digestive tract to the spleen, gallbladder, and pancreas. What constituents would you expect to be in the blood that enters the liver and what might the liver do with what it receives?
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The hepatic portal system drains blood from the digestive tract to the spleen, gallbladder, and pancreas. What constituents would you expect to be in the blood that enters the liver and what might the liver do with what it receives?
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- The liver has a portal vein as well as a hepatic vein. It also has unique exchange blood vessels similar to capillaries, called “sinusoids.” How do these unique structures determine the function of the organ?Certain drugs cannot be taken by mouth because the entire dose of the drug is destroyed in the liver before it ever reaches the general circulation. Explain why the same drugs can be given by injection, either intravenously or intramuscularly.What organ processes (removes nutrients from) the nutrient-dense blood after it leaves the intestines?
- There’s a factory inside the person that weighs about 1.4 kilograms and runs for 24 hours a day. It’s her liver: the heaviest organ in the body, which simultaneously acts as a storehouse, a manufacturing hub, and a processing plant.What are some of the harmful activities or habits that could damage the liver and its ability to keep filtering the blood, and why do they do this? What are some potential solutions to this problem?Which of the following correctly describe the flow of blood through the classical liver lobule and beyond? (More than one choice is correct.) (a) portal venule to sinusoids to central vein to hepatic vein to inferior vena cava, (b) porta hepatis to hepatic vein to portal venule, (c) portal venule to central vein to hepatic vein to sinusoids, (d) portal arteriole to sinusoids to central vein to hepatic vein.Cirrhosis leads to scarring and increased hydrostatic pressure in the hepatic portal vein. Why do you think this increase in venous pressure causes increase in filtration of the hepatic capillaries which causes ascites (swollen and fluid-filled interstitial space of the abdomen).
- Which of the following correctly indicates the relationship between the two arteries? Choose one from the following: (A) the gastroduodenal artery gives rise to the right gastric artery (B) the hepatic artery proper gives rise to the gastroduodenal artery (C) the splenic artery gives rise to the short gastric arteries (D) the left gastric artery gives rise to the gastroduodenal arteryYou are a dietitian working in a hospital. You noticed that the resident physician typically orders serum albumin to diagnose malnutrition. He said that since albumin is synthesized in the liver, it is a marker of hepatic protein synthesis and protein status. What would you tell the physician? Explain your reasoning.You are going to go out with a bunch of friends to a restaurant with the best pizza in town. Your favorite is the pizza covered with cheese, tomato and lots of garlic and onions. The only problem is that you know that later in the evening you will be suffering from heartburn and indigestion. Decades ago, the only choice was to take some antacids after overeating pizza, but today there are multiple choices of preventative medications that act to stop heartburn before it starts. The stomach is a highly acidic environment that is further acidified after ingestion of food, which triggers a hormone-stimulated cascade. This hormone stimulation results in the activation of a H+ /K+ ATPase channel ("proton pump") that releases additional protons into the stomach cavity. Heartburn occurs when the acid in the stomach undergoes reflux and backs up into the esophagus, giving you that burning feeling in the chest. There are three types of remedies available. 1. Antacids such as calcium carbonate…
- What would happen if HCl were not secreted in the stomach?what is the significance of the large number of blood vessels connecting to the small intestine in terms of transport needs? Justify if there will be any role of Blood Pressure on absorption in your own wordsWhat three major branches of the aorta supply the digestive tract? What is the relationship between these three arterial supplies and the embryonic development of the digestive?tract?
