The enzyme found in the mouth is salivary amylase (or ptyalin).

Here are the answers to your questions: 8. The enzyme found in the mouth is salivary amylase (or ptyalin). 9. The class of food first digested in the mouth is carbohydrates. 10. The digestive juice produced by the stomach walls is gastric juice. 11. Digestion of proteins begins in the stomach. 12. Digestive juice produced by the following organs: i) Pancreas: Pancreatic juice* ii) Liver: Bile* (produced by liver, stored in gallbladder) iii) Intestinal walls: Intestinal juice* (or succus entericus) 13. The body organ responsible for the production of bile is the liver. 14. Bile is useful during digestion of food because it emulsifies fats, breaking large fat globules into smaller ones, which increases the surface area for lipase enzymes to act upon. 15. Two examples of vitamins stored by the liver are: i) Vitamin A* ii) Vitamin D* (also Vitamin B12, Vitamin K, Vitamin E) 16. Two disorders of the digestive system are: i) Constipation* ii) Diarrhea* (also ulcers, appendicitis, gallstones) 17. To avoid constipation, a person should eat a diet rich in fiber, drink plenty of water, and exercise regularly. 18. The main cause of constipation is a lack of fiber in the diet and insufficient water intake. 19. Three ways of caring for the digestive system: i) Eat a balanced diet rich in fiber*. ii) Drink adequate amounts of water daily*. iii) Avoid excessive consumption of processed foods and sugary drinks*. (Also: regular exercise, chew food thoroughly, manage stress). That's 2 down. 3 left today — send the next one.