Digestive System

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

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

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

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

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

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

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

1. Mouth Tasting experiment A B C D Taste Region

1. Mouth Tasting Experiment Results:

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