HLSC 2461U Lecture Notes - Chemokine, Hbsag, Fibroblast
Document Summary
Small organ at the beginning of the large intestine, comes out of the cecum. It has all the layers of the gastrointestinal tract (mucosa, sub, muscle, serosa) Not useful as a colon although it is part of it. Normal appendix is 1cm in diameter so its smaller than the rest of the gi tract. Whenever the lumen gets obstructed, this allows bacteria that are normally in the cecum and in the lumen of the appendix to get stuck there and start growing * causes appendicitis. Happens when lymphocytes proliferate (due to immune response) after viral infection, worms inside the colon (tropical places) & gets stuck in appendix. Starts as dull pain then concentrated in lower right quadrant of the abdomen. Main complication of appendicitis is peritonitis (treat it fast!) Intestinal villi are formed by enterocytes (don"t go into detail) Lactase: enzyme that breaks down lactose (disaccharide), enterocytes have lactase, happens in premature children or viral diarrhea (can"t drink milk, etc)
