PPT-Accessory Organs to the Digestive Tract

Pages 473476 and 494497 Teeth mechanical digestion through mastication Salivary glands parotid submandibular sublingual Secrete saliva a bicarbonate rich juice chemical digestion via secretions of enzymes. . 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.. Embryonic Mouth Formation. Non-molting vs. Molting. Review. Animal Evolution. What’s this?. Deuterostomia. Protostomia. Embryo Formation. Deuterostomia. Protostomia. Embryo Formation. Non-organs vs. Organs. Dr. Kim Wilson . Introduction to the Respiratory System . FUNCTIONS. 1. Providing an extensive surface area for gas exchange between air and circulating blood.. 2. Moving air to and from the exchange surfaces of the lungs.. Dr. Kim Wilson . Introduction to the Respiratory System . FUNCTIONS. 1. Providing an extensive surface area for gas exchange between air and circulating blood.. 2. Moving air to and from the exchange surfaces of the lungs.. 6.2. Small Intestine. Longest part of digestive tract. Some physical digestion through . segmentation. Chyme sloshes back and forth between segments as circular muscles briefly contract. Main function. NUTRIENTS IN DIGESTIVE SYSTEM. They. are . substances. . that. . plants. and . animals. . need. . to. . live. and . grow. .. The. . digestive. . system. . is. . the. . group. of . organs. 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 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,. 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. . Ingestion. . – taking food/drink into mouth.. Propulsion. . – movement through alimentary canal (swallowing, peristalsis).. Mechanical Digestion. . – . Physical. breakdown of food (chewing, churning)..