Leader: Course: Instructor: Supplemental Instruction Date: Iowa State University 1. Name at least 3 functions of the digestive system: Digestive System II Week 6.2 John A ECL 365 Dr. Adams 10/2/12 2. The major site of water re-absorption is the _________ ____________. This is also where the waste is compacted. 3. The ______ _____________is a pouch in the wall of the digestive tract. What does it do? 4. Humans have a vestigial cecum known as an appendix. What is its function? 5. The __________ is the largest _______ in the body and is found in a position over the stomach. Name two important functions: 6. The ___________ is a blind sac that stores a substance known as _______. What is the function of this substance? 7. The __________ produces enzymes important in breaking down food molecules; fats to _________ and __________ to simple sugars. It is also rich in __________ to neutralize stomach acid. 8. Name the factors important in influencing the size of the digestive tract. 9. The large intestine in mammals and most fish terminates in a ________ and an ________, while in chondrichthyes, reptiles, amphibians and birds it terminates in a ________. 10. Describe isometry, and how it was used in determining the gut size of fish in a Panamanian stream. 11. Use the same principal to describe how much vertebrates eat vs. body size. 12. Many fish have a __________ __________located in the digestive tract which helps to increase surface area.