write T if the statement is true and F if the statement is false.
1. The respiratory system works with the digestive system by delivering nutrients to the rest of the body through the blood vessels. 2. Mastication chemically breaks down food into smaller pieces in the mouth. 3. Villi folds in the stomach absorb nutrients from the digestive food. 4. While in the mouth, the food is rolled into a slimy mass of food called bolus. 5. The three parts of the small intestines are duodenum, cecum, and jejunum. 6. The gallbladder stores the bile produced by the liver. 7. The excretory system is responsible for removing the waste products from the digestive system. 8. Amylase is an enzyme that chemically converts proteins into amino acids. 9. Diarrhea is a condition in which there is difficulty during defecation because of hard and dry stool. 10. Pellagra is caused by vitamin B-3 deficiency.
