1. The digestive system breaks down food into simpler molecules.

2. Tongue- push food around and down
Mouth
Teeth- break down food
Tongue- push food around
and down
Saliva- moistens food, contains amylase (enzyme that breaks down starches into sugars)
mouth

3. Peristalsis- contractions that move food to stomach
Esophagus
Peristalsis- contractions that move food to stomach
Cardiac Sphincter- prevents contents from flowing back
esophagus

4. Pepsin- enzyme that breaks down proteins Mucus protects wall
Stomach
Large muscular sac
Very acidic
Pepsin- enzyme that breaks down proteins
Mucus protects wall
Stomach

5. Pancreas- helps digest fat and protein
bile from the liver/gallbladder helps digest fats
liver
bile
Pancreas
stomach
bile
chyme
bile
gallbladder
pancreas
enzymes
duodenum

6. Lined with villi / microvilli - finger like projections
Small Intestine
Lined with villi / microvilli
- finger like projections
Nutrients are absorbed through wall into blood stream
small intestine

7. Large Intestine (Colon)
Removes water
Bacteria help absorb vitamin K
large intestine

8. Rectum/Anus
Eliminates waste
rectum/anus