1. Human Systems:
Digestive System

2. Digestive system
Digestion
Absorption
Assimilation

3. Digestive system Made up of tube like organs called digestive tract
Mouth, pharynx, esophagus, stomach, small and large intestines, rectum and anus
Salivary gland, liver, pancreas, and gall bladder also contribute but food does not pass through them

5. Digestive system Breaking down food Mechanical Chemical
Carbohydrates, proteins, fats
Enzymes for digestion

7. Digestive system Digestion begins in mouth Teeth (enamel)
Role of saliva

8. Digestive system Leaving the mouth Esophagus peristalsis
antiperistalsis

9. Digestive system Stomach Muscular sac- like organ Squeeze food
Acid and enzymes for digestion
Acid kills microbes as well
Leaving the stomach
Chyme (chyme is acidic)
Stomach releases chyme into small intestine

11. Digestive system Pancreas
Produce secretions to reduce acidity (bicarbonate)
Produce digestive enzymes
Chyme does not enters the pancreas

12. Digestive system Small intestine Muscular long tube
Villi increase surface area, facilitate absorption

13. Digestive system Liver and gall bladder
Breaks down toxins, stores materials, produce bile
Bile is made by liver, stored in gall bladder, secreted in small intestine
Role in fat digestion

15. Digestive system Large intestine
Stores, compacts and eliminates undigested material
Absorption of water
Undigested waste – feces or stool
Stored in last part of intestine – rectum
Excreted through anus
Fiber and digestion

16. Digestive system

17. Disorders Ulcers Liver disorders (infections and cancer)
Diarrhea and constipation
Appendicitis
Colon cancer