1. Kaupapa: 03 / 27 Monday Define “digestion”
Describe the process of digestion in the mouth

2. Do you remember? Describe the food test for proteins
Describe the food test for starch
Describe the food test for glucose
Compare and contrast starch and glucose

3. Digestive System

4. What is digestion?
Why do we need to digest?

5. Digestion
Digestion is breaking down food into smaller parts in order to extract and absorb the nutrients within.
There are two types of digestion:
Physical digestion
Chemical digestion (by Enzymes)

6. Digestive System Teeth Tongue Salivary Glands Oesophagus Liver
Gall Bladder
Stomach
Pancreas
Small Intestine
Large Intestine
Rectum
Anus

7. Part One: MOUTH
What happens to the food in the mouth?

8. Chewing (Physical Digestion)

9. Human Teeth a)
Incisor b)
Canine c)
Molar d)
Premolar

10. Canine Incisor Molar for ripping and tearing for cutting food
for crushing and grinding

11. Crazy Canines !
Walrus

12. Crazy Canines !
Sabre Tooth Tiger
(extinct)

14. What else happens in the mounth?
Saliva mixes with food

15. Enzymes in Action

16. Saliva breaks down starch
(Chemical digestion)
Starch
Glucose

17. Part One: MOUTH The food is physically digested by the _______.
The food is also mixed with _______ which enables swallowing. It also contains _______ (carbohydrates) which chemically digest ________ into __________.

18. Demo – Starch & Saliva

19. Weet-Bix Challenge

20. What have we learnt today?
What is digestion?
Describe two things that happen to the food in the mouth
Why do we need saliva?