PPT-Small Intestine -7m of length is the longest region of the alimentary tract

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. Chapter 14. Alimentary canal. Aka gastrointestinal (GI) tract. Continuous tube open at both ends. About 9m long in a cadaver; when living shorter due to muscle tone. Food is technically outside the body. 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. Segments of the GI tract. and . Sphincters. (. t. onically. contracted ). . GI Track Functions. Ingestion. . Digestion. Absorption. Defecation. There are two stages of . digestion. Mechanical 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 . 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. The key organs of the gastrointestinal (GI) tract are the stomach and the intestines.. This includes:. Mouth. Pharynx. Salivary glands. Trachea. Esophagus. Sphincters. Stomach. Liver. Gallbladders. Bile duct. Digestive System. AKA gastrointestinal system or GI system. Function. =responsible for the physical & chemical breakdown of food so it can be taken into bloodstream & be used by body cells & tissues. Life sciences Grade 11 CAPS structured, clear, practical - Helping teachers unlock the power of NCS KNOWLEDGE AREA: Life Process in Plants and Animals. TOPIC 3: Animal Nutrition The Structure of the Human Digestive System The order is:. Mouth. Pharynx. Esophagus. Stomach. Small intestine. Large intestine. Rectum. Anus. Ingestion and mastication. Mouth (aka Oral cavity). Both physical (chewing food) and chemical digestion occur (salivary amylase). mechanical. and . chemical. . processes.. This occurs in the Alimentary Canal…. Alimentary canal . – long muscular tube that runs from the mouth to the . anus. . Peristalsis . – muscular movement of food. Choke. Although apples, small nubbins, carrots are reported as causing this condition, by far the commonest cause of choke in the equine is the hurried eating of dry grain.. The location of the choke can vary from the post pharyngeal to the stomach region of the esophagus, but the commonest is the posterior third of the cervical region at about where it enters the thorax.. - illustration - cat - anatomy - 06.htm http://faculty.irsc.edu/FACULTY/TFischer/bio%202%20files/Bio%202%20resources.htm http://www.teachnet.ie/farmnet/digestive.htm Human/Dog Digestive system or Simp 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 .