PPT-The Digestive System Gastrointestinal tract Physiology

Dr Suaad M Ghazi MBChB MSc PhD Objective of lecture 3 Explain gastric anatomy and how gastric secretion and stomach motility are regulated lower oesophageal sphincter Body corpus. . and Muscular. Systems . By Blandy , Esmeralda , Misty , Alexis , Idaly. Digestive system. The digestive tract (also known as the alimentary canal) is the system of organs within multicellular animals that takes in food, digests it to extract energy and nutrients, and expels the remaining waste.. The . digestive system . is involved in the ingestion and digestion of food and elimination of indigestible material.. Digestion takes place within the . digestive tract. , which begins with the mouth and ends with the anus.. 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 human body systems . interact? . Today I will learn about the integumentary and lymphatic systems because both systems are responsible for protecting the human body from . disease. .. Fact or Fiction? (7 minutes). PowerPoint® Lecture Slides prepared by Jason LaPres. Lone Star College - North Harris. Introduction to the Digestive System. Acquires nutrients from environment. Anabolism. Uses raw materials to synthesize essential compounds. . Qattan. 2. The GI tract. . (gastrointestinal tract). . Mouth. Pharynx. Esophagus. Stomach. Small intestine. Large intestine. Anus. The accessory digestive organs. Supply secretions contributing to the breakdown of food. DIGESTIVE SYSTEMPeople are probably more aware of their digestive system than of any other system not least because of its frequent messages Hunger thirst appetite gas and the frequency and nature of pharynx to esophagus all food changes that occur in the alimentary canalAnatomy Physiology Digestive System Ziser 2003breaking large molecules proteins fats starches etca thick coating of bicarbona From the GastroenterologywwwacggiorgWhat is a Gastroenterologist1489V 3/17/04 441 PM Page 1the gastrointestinal tract and liver pancreas gallbladder bile ducts and liver It involves a detailedof nu System. Dr.Fadia. Al-. khayat. The digestive system is composed of a continuous tract beginning with the oral cavity and ending at the anus. this tract is called the . alimentary canal . or the . gastrointestinal tract (GIT). continual supply . of water, electrolytes, and . nutrients.To. achieve . this requires . (. 1) movement of food through. the alimentary tract; (2) secretion of digestive juices. and digestion of the food; (3) absorption of water,. 1 EFSUMB – European Course Book Editor: Christoph F. Dietrich Transabdominal ultrasound of the gastrointestinal tract Alois Hollerweger, Klaus Dirks, Kazimierz Szopinski Corresponding author: Ingestion: . The in take of food into the digestive tract through the mouth. Mechanical Processing: . The physical manipulation of solid foods into materials that are easier to propel through the digestive tract. Also increases the solid foods surface area which makes them more susceptible to enzyme activity and easier to absorb. . 4 . December 2012. Introduction to the alimentary system. T. he burden of GI diseases. Professor Julian . Walters. Gastroenterology. Overview. The organs of the alimentary tract. Symptoms and signs .