1. Digestive System

2. 1. Mouth Also called the oral cavity
Digestion begins here with the enzyme amylase (found in saliva) which breaks down polysaccharides into disaccharides

3. 1. Mouth Produces a bolus which is a ball of food mixed with saliva
Food is chewed by teeth, mixed with saliva, and manipulated by the tongue

4. 1. Mouth The mouth contains: A. Teeth: 32 in an adult; 20 in a child
Break down
food

5. 1. Mouth The mouth contains: B. Tongue – muscular organ for
moving food, swallowing, tasting, and speech
attached to the mouth floor by the frenulum

6. 1. Mouth
The mouth contains:
B. Tongue –
10,000 taste buds

7. 1. Mouth The mouth contains: C. Salivary Glands – (3 pairs)
parotid, submandibular, and sublingual
Function: produce saliva

8. 1. Mouth D. saliva: keep the oral cavity moist
has enzymes that break down food
Enables specific taste

9. 1. Mouth
Tasting experiment A B C D
Taste
Region

10. 1. Mouth
Tasting Experiment Results:

11. Digestive disorders A. Causes (how one gets the disorder)
Using your device find A, B, and C about the following disorders:
Peptic Ulcers
Kidney Stones
A. Causes (how one gets the disorder)
B. Structures affected
C. Symptoms