Today’s Objectives Be able to define the vocabulary words words. Be able to explain the differences between the deciduous and permanent dentitions. Label and know the functions of the parts of a tooth. Be able to answer the questions.

Digestion Mechanical - mastication (chewing) Chemical - enzymes Bolus - small, rounded mass of masticated food to be swallowed Deglutition – swallowing Chyme – soupy food mixture found in the stomach Peristalsis - muscular contractions that push food along the digestive tract

Questions 1. What are the principle food groups and how are they digested and used for different purposes? 2. What is the source of energy in food? 3. Where does digestion begin? 4. Where does the major chemical breakdown of food occur?

5. What is the role of the pancreas, liver, and gallbladder in digestion? 6. What are gallstones? 7. What is the function of bile and where is it released? 8. What do you think would happen if peristalsis came to a halt?