PPT-Tumours of the small intestine

Dr Alaa Jamel Tumours of the small intestine Classification Benign Adenoma Gastrointestinal stomal tumour lio myoma Lipoma Hamartoma eg peutzjeghers syndrome associated with . \r\r\f  EsophagusStomach Pancreas Small intestine Duodenum Ulcer A peptic ulcer is a sore on the Intestinal Obstruction. Obstruction to the . antegrade. flow of intestinal contents. Mechanical . Blockage within the lumen. Blockage from outside of the lumen. Ileus. – non mechanical. Paralysis of the intestine. chemical breakdown. cross-section (optional). digestive system. function. mechanical breakdown. organ. nutrients. tissue. toxins. Talking drawing. Complete the first part of Student Sheets 15.1, “Talking Drawing: Digestion.”. • . The most active region for both . digestion. . and . absorption. is the . small intestine. • . The barrier through which materials must pass during absorption from the gut is formed by a single layer of epithelial cells on the surface of the villi, the . Small intestine. Small Intestine, Large Intestine and anal cannel . General Structure of the Digestive Tract. Epithelium with goblet cells and absorptive cells. Lamina . propria. Muscularis. . mucosa. Mixing contractions. Propulsive Contractions. A. ll movements of the small intestine cause at. least some degree of both mixing and. . propulsion.. Mixing Contractions (Segmentation Contractions). When a portion of the small intestine becomes distended. 2017. How is the body of a . mammal organized?. Experimental Question: . Revised 2-10-2014. Objectives. Study the gross anatomy of a mammal that shares a common evolutionary ancestor with humans.. Identify and compare important external structures of the rat to human features. . Small excessive bacteria in the small intestine.Typically, the small intestine contains low levels of bacteria A common misconception is that SIBOaffects only a limited number of people, such as tho The . length of the small bowel varies . from 300 . to 850 . cm.. . B. etween . the duodenojejunal (DJ) flexure . to the . ileocaecal . valve. . The . proximal 40% of the small intestine is referred to . Composition of Bile. A yellowish-green liquid that is continuously secreted from liver cells. Contains:. Water. Bile salts. Bile pigments (bilirubin and . biliverdin. ). Cholesterol. Electrolytes. Bile Salts are most abundant and only substance to have a digestive function. Most common. . benign tumours. , . are. leiomyomas,. adenomas. vascular tumours (haemangioma, lymphangioma). . malignant tumours,. . carcinoid tumours. lymphomas . adenocarcinoma. . .. Carcinoid . TOPICS TO BE DISCUSSED. . Gross Anatomy. Histology . Embryology. Gastrointestinal tract. . Rima. . oris. to anus. 1.Oral cavity- . tongue,teeth,salivary. . glands,hard. . palat. and soft . palat. INTESTINE. The . length of the small bowel varies from . 3 . to . 8.5 m . between the . duodenojejunal. (DJ) flexure to . the . ileocaecal. . valve.. It is . difficult . to . establish the length of the small intestine, and estimates . -anatomically in to three regions, duodenum, jejunum and ileum.. -it digests food material and absorbs end products of the digestive process... -to perform its digestive functions, the first region of the small intestine, the duodenum, receives enzymes and alkaline buffer from the pancreas and bile from the liver, additionally, epithelial cells and glands of the mucosa contribute buffer and enzymes to facilitate digestion..