NUTRITION DENG Zeyuan

Lovely? Strength? What should he eat for good Nutrition?

Compare the 2 pictures? How do you feel?

Introduction of Nutrition Nutrition might be defined as the process whereby we obtain the essential nutrients and use them to make many other substances our bodies need. This process would include eating and digesting food and absorbing and using, or metabolizing, the nutrients it contains.

NUTRIENTS Nutrients are the chemical components of food which perform nutritive functions: Fats Proteins Carbohydrates (sugars and starches) Minerals Vitamins Water ? Dietary fiber, Antioxidants

Functions of Foods and Nutrients Provide energy for activities Build and maintain body tissue Regulate body processes

Gastrointestinal Tract , Digestion and Absorption Deng Zeyuan Part 1

Digestion The process by which food is broken down into absorbable units. To take apart.

Anatomy 1. Mouth Epiglottis Trachea 2. Esophagus Cardiac sphincter

3. Stomach Pyloric sphincter 4. Small Intestine Duodenum Jejunum Ileum

Organs involved: Liver Gallbladder. Pancreas Appendix

Regulation and Absorption: 1. Homeostasis 2. Hormones: 1) Gastrin 2) Gastric-peptide 3) Cholecystokinin / CCK