two types of digestion

mechanical and chemical digestion

1. TWO TYPES OF DIGESTION

2. OBJECTIVE OF THE LESSON Define digestion. differentiate Mechanical and Chemical digestion

3. TERMS TO KNOW: DIGESTION- is the process where food is broken down by the digestive system into small nutrients to be absorbed by the body.

4. TERMS TO KNOW: 2. NUTRIENTS- are very tiny molecules that are broken down from large molecules to be absorbed and used by body cells.

5. Types of Nutrients Micronutrients - vitamins, minerals, & water Macronutrients - proteins, lipids, carbohydrates, etc…

6. TWO TYPES OF DIGESTION 1.MECHANICAL DIGESTION- is the process of changing physical form of food. 2. CHEMICAL DIGESTION- is the process of changing chemical composition of food into a new substances with the aid of digestive enzymes.

7. Mechanical and Chemical Digestion in the Parts of Digestive System Mouth- takes place inside the mouth mechanical digestion where teeth and tongue breakdown food by chewing, tearing, grinding, mashing, mixing and crushing

8. Mechanical and Chemical Digestion in the Parts of Digestive System Mouth- the salivary gland secrete mucus and an enzyme called amylase to breakdown carbohydrates to simple sugar, it is chemical digestion.

9. Mechanical and Chemical Digestion in the Parts of Digestive System Esophagus The esophagus is a muscular tube. As we swallow, we push food along the tube until the food reaches our stomach. This process of pushing down the food is called peristalsis

10. Mechanical and Chemical Digestion in the Parts of Digestive System Peristalsis: A type of physical (mechanical) digestion in which food is squeezed through your digestive tract; like from your esophagus into your stomach

11. Mechanical and Chemical Digestion in the Parts of Digestive System Stomach The stomach mixes the Food with gastric juices called pepsin to form chyme . The chemical digestion of proteins begins in the stomach.

12. Mechanical and Chemical Digestion in the Parts of Digestive System Small Intestines Where fat molecules are broken down into smaller molecules. Which is an example of chemical digestion. The remaining food is pushed down (peristalsis) to exit the digestive system. Which is an example of physical digestion.

13. Mechanical and Chemical Digestion in the Parts of Digestive System Large Intestine Where excess water is removed before eliminating waste. Which is an example of physical digestion.

14. What type of digestion it is? Chewing a Fish ball? Saliva breaking the carbohydrates down into molecules of glucose? Fat molecules broken down into smaller molecules in the small intestine? Your tongue breaking pieces of a hamburger apart? Excess water being removed by the large intestine? Pepsin (an enzyme) in your stomach breaking the hamburger into amino acids? Peristalsis occurring in the esophagus?