1. NUTRITION
DENG Zeyuan

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

3. Compare the 2 pictures?
How do you feel?

4. 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.

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

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

7. Gastrointestinal Tract , Digestion and Absorption
Deng Zeyuan
Part 1

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

9. Anatomy
1. Mouth
Epiglottis
Trachea
2. Esophagus
Cardiac sphincter

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

11. Organs involved:
Liver
Gallbladder.
Pancreas
Appendix

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