PPT-C h a p t e r 22 The Digestive System

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. A. Bacterial Diseases of the Upper Digestive Tract (Mouth & Stomach). 1. Tooth Decay (dental caries). A) This is an endogenous infection . 1) Most common infectious disease of humans . 2) Young are more susceptible than old. Lesson5– . Digestive System Model. Objectives. :. Students will gain a full understanding of how the digestive and excretory system work in their own . bodies.. Students will be able to name the parts of the digestive system.. Objectives. :. You . will use and understand the scientific process for groups experiments. Students will gain a full understanding of how the digestive and excretory system work in their own bodies. A. Bacterial Diseases of the Upper Digestive Tract (Mouth & Stomach). 1. Tooth Decay (dental caries). A) This is an endogenous infection . 1) Most common infectious disease of humans . 2) Young are more susceptible than old. What do you already know?. Complete the Digestive System Handout to the best of your ability without looking in any text or your notes.. You may work in groups.. Do not complete the bottom overview.. GI tract. (gastrointestinal . (digestive) . tract. alimentary canal). Accessory organs:. teeth, . salivary . glands, . liver. , . gallbladder. , . pancreas. Digestion Involves Many Processes:. INGESTION. General Biology II. BSC 2011. Insert photo here representing. chapter. (credit: . modification of work by Julie Rybarczyk). Types of Digestive Systems. Heterotrophs are divided into three groups based on their food sources. Learning Objectives. Define Key Terms relating to the digestive system. Describe the four functions of the digestive system. Identify at least 10 digestive system structures and the function of each. Main Function of the digestive system. Digestion. - the process by which your body breaks down the food you eat into substances that it can take absorb (take in) and use.. Organs of the Digestive system. 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,. to convert food into nutrients your body needs, and to rid the body of waste. . To do its job, the system requires the cooperation of a number of different organs throughout the body, including the mouth, stomach, intestines, liver and  gallbladder. The digestive system has . three main . functions: . to convert food into nutrients your body . needs. Absorption. R. id . the body of . waste. To . do its job, the system requires the cooperation of a number of different structures and organs throughout the body, including the mouth, stomach, intestines, liver, pancreas and  gallbladder.. 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. . . 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 .