PPT-The small intestine ANATOMY

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 . KAAP 310. Alimentary Canal and Accessory Organs. Alimentary Canal:. Mouth (oral cavity). Pharynx. Esophagus. Stomach. Small intestine. Large intestine. Anus. Accessory Organs*:. Tongue. Salivary Glands. \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. • . 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 . KAAP 310. Alimentary Canal and Accessory Organs. Alimentary Canal:. Mouth (oral cavity). Pharynx. Esophagus. Stomach. Small intestine. Large intestine. Anus. Accessory Organs*:. Tongue. Salivary Glands. 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. I. Digestive System. Functions:. Organs. Two functional groups:. 1. . Alimentary Canal. . or . Gastrointestinal tract. Organs which ingest, propel, digest, absorb, & eliminate. . Oral cavity, pharynx, esophagus, stomach, . 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. 2. Teetha. mechanically reduce the size of ingested foodi. increases surface areab. teeth are also used for cutting food (incisors) and defense (canines)c. Types of teeth:i. identified by locati 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. . Digestive system. The digestive system is used to for breaking down foods into nutrients which then pass into the circulatory system and are taken to where they are needed in the body and remained matter are thrown out of the body . 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..