1. Digestive System What are the parts of this system?
What is the job of each part??
How does it interact with other systems?
How can I best care for it?

2. Parts of the Digestive system
Teeth
Salivary Glands
Esophagus
Stomach
Liver
Gallbladder
Pancreas
Small Intestine
Large Intestine (Colon)
Rectum
Anus

3. Function: Digestion Breakdown of food
into basic building blocks (nutrients)
Mechanical: chewing & churning
Chemical: digestive juices
Mouth (carbohydrates)
Stomach (proteins)
Small Intestine (fats)

4. Mouth Teeth: Mechanical breakdown of foods Salivary Glands:
Chemical breakdown of carbohydrates
(starches & sugars)

5. Stomach Gastric Juices breakdown proteins: 1. Hydrochloric acid
2. Pepsin (enzyme that digests protein)
Smooth Muscles in walls churn food to make
Chyme: Creamy mixture of
food and gastric juices

6. Liver Bile: Greenish fluid breaks down Fats 1. made in Liver
2. stored in Gallbladder
Also changes toxins (poisons) into harmless substances.
Examples of Body’s Toxins
1. Poisonous Foods, Plants, Animals
2. Alcohol & Drugs (including medicines (ibuprofen…)

7. Pancreas Produces: 1. Insulin - metabolizes sugars in the blood
2. Digestive Enzymes - for fats and proteins

8. Small Intestine 21-23 feet long…and…1 inch in diameter
Villi: finger-like projections in
the walls of the small intestine
lined with capillaries
(smallest vessels in the circulatory system).
1. Major digestion of fats
2. All undigested food is broken down
3. Most nutrients absorbed

9. Nutrients Carbohydrates - energy Proteins – build & repair tissues
Fats - energy
Vitamins – support metabolism
Minerals – building blocks of cells

10. Digestive Processes Mechanical Breakdown: chewing & muscles
Chemical Breakdown: enzymes & ‘juices’
Peristalsis: Involuntary muscle contractions
that mix and move food through
the digestive tract

11. Large Intestine 5-6 feet long…and …2-3 inches in diameter
Last Chance!!
Final nutrients pass into the blood stream
1. Water
2. Vitamins
3. Mineral Salts

12. Absorption & Elimination
Absorption: Nutrients pass into blood stream
Provide
1. Energy to power muscles
2. Substances to repair tissues
Elimination: Undigested food leaves body
Cellulose from vegetables & fruits

13. Diseases Ulcers – sores Diabetes I & II – blood sugar, pancreas
Hyperglycemia & Hypoglycemia
Itis = ‘inflammation of’
Appendicitis – appendix
Pancreatitis – pancreas
Ulcerative Colitis/ Chron’s Disease
Gallstones – mineral rocks in the Gall Bladder
Eating Disorders
Obesity, Anorexia Nervosa, Bulimia

14. Ulcers

15. Best Care Diet with all Nutrients 1. Proteins, Carbohydrates, Fats
2. Vitamins & Minerals
3. Fiber – fruits & vegetables
Rest and Digest
Low stress at mealtimes
Exercise
1. Improves blood circulation
2. Decreases stress
3. Massages organs