1. The Digestive System

2. What is the function of the digestive system?  Convert and break down foods into simpler molecules that can be absorbed by the body.

3. Mouth  Chemical /physical breakdown of food  Masticate-chew  Amylase breaks down carbs

4. Esophagus  Epiglottis prevents food from entering trachea  Muscular tube that connects your mouth and your stomach  Peristalsis moves food to the stomach

6. Stomach  Muscular sac  Mechanical/chemical  Muscles contract and churn food+digestive juices  chyme  HCl,Pepsin  digests protein  No digestion of carbs

7. Small Intestine  20 ft  Food stays 4-8 hrs.  Absorption of nutrients

8. Villi fingerlike projections which line the walls of s.intestine/absorbs nutrients

9. Large Intestine  5 ft.  Water absorption  Indigestible materials stay 10-12 hrs.  Leads to rectum/anus

10. Liver  Biggest organ  Detoxifies poisons

11. Pancreas  Secretions neutralize stomach acid  Secretes insulin, helps cells absorb glucose

12. Healthy Habits  Eat food high in fiber  Drink water

13. hw Comic Strip