PHGY 313 Lecture Notes - Galactose, Facilitated Diffusion, Gastrin
17 Jul 2013
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Document Summary
Symptoms: abdominal pain in central and right lower quadrant. Required iron supplements and intramuscular injections of vitb12. Eventually got intestinal obstruction and had parenteral nutrition. Expand on the function of the different segments on the intestinal tract on the absorption of different nutrients. Crohn"s disease is an autoimmune disease causing inflammation of the si. All parts of the gi tract can be affected from the mouth (aphthous ulcers of mucosa and tongue) to anus (skin tags, fistulas). The main affected area is the terminal ileum, but in the intestines many things occur: Mesenteric lymph nodes enlarge (peyer"s patches in jejenum) Note: vitamin b12, vitamin c, and bile salts are absorbed in the ileum. Damage to the small intestine can cause fibrosis and damage of enterocytes, leading to malabsorption of fat, carbohydrates, vitamins, and minerals. A fistula can cause a bypass of some of the small intestine leading to further malabsorption.
