1. Digestive Systems An intro lesson to Nutrition Mr. Myers, A.S

2. Objectives  Distinguish between monogastric and ruminant digestion systems  Summarize Vocabulary terms  Review the digestive systems  Compare human digestion to livestock

3. Terms  Nutrient  Nutrition  Gastrointestinal Tract  Digestive Systems

4. Nutrient noun “A substance or ingredient that promotes growth, provides energy, and maintains life” Merriam-Webster

5. Nutrition noun “The act or process of nourishing or being nourished specifically : the sum of the processes by which an animal or plant takes in and utilizes food substances” Merriam-Webster

6. Gastrointestinal Tract noun “The part of the digestive system that consists of the stomach and intestines” Merriam-Webster

7. Digestive System noun “The bodily system concerned with the ingestion, digestion, and absorption of food and the discharge of residual wastes and consisting of the digestive tract and accessory glands (such as the salivary glands and the pancreas) that secrete digestive enzymes” Merriam-Websterdigestive tract  Mouth: “Prehension” tool (grasps food)  Salivary glands secrete juices containing enzymes (digest food)  Chewing food breaks down  Esophagus: muscular tube that connects mouth to stomach  Peristaltic Movement: sequential contraction of ringlike muscles  Reverse Peristalsis = vomiting

8. Two major systems  Ruminant - an animal that chews the cud, specifically : an herbivorous, even- toed, hoofed mammal that has a complex 3- or 4-chambered stomach Merriam-Webstercudeven- toed  Monogastric - having a stomach with only a single compartment Merriam-Webster

9. Mun.ca

11. Review Review Terms Review the Digestive systems

12. Lab Activity

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