1. The Digestive System- breaks down large molecules of food and converts them into nutrients.

2. Mouth Mechanical digestion takes place - teeth
Chemical digestion – Amylase Enzyme present in our saliva
11 cm long

3. Esophagus Muscular tube
Peristalsis is a mechanical movement of pushing the food into the stomach.
About 25 cm long

4. Stomach chemical digestion takes place with the aid of the gastric juices.
Strong muscles
The Stomach walls produce Digestive juices- hydrochloric acid.
Food changes into Chyme a milk shake like substance.
About 22 cm long

5. Small Intestine Most digestion occurs here
Molecules pass out through villi into blood and nutrients are absorbed.
About 690 cm long

6. Pancreas Accessory organ Food does not go through the pancreas
Produces chemicals to help break down macromolecules

7. Liver Accessory organ Has many jobs
Produces bile a chemical to help digest fat or greasy substance from food like butter, cheese and fat from meat.

8. Gall Bladder
Accessory organ
Stores bile
Helps digest fat

9. Large Intestine (Colon)
Absorbs extra nutrients & water
Forms wastes into solid feces
About 152 cm long

10. Rectum
Stores wastes
About 14 cm long

11. Anus
Muscle that controls when wastes leaves the body