overview+of+digestive+system+WG

1. Argue that absorption is the most important of the five processes of digestion over the other four processes. Because its when the nutrients enter the blood for delivery to the cells. That is one of the most important thing your cells need, and absorption supplies that need.

2. List the main organs of the digestive tract and state the contribution of each to the digestive process. The Mouth: receives food and begins the process of mechanical and chemical digestion. The Stomach: stores food, initiates the digestion of protein, and controls the movement of chyme into the small intestine. The Small intestine: absorbs molecules, which are products of the digestive system. The Large intestine: absorbs vitamins, and water, which prevents dehydration.

3. Name the enzymes involved in the digestion of starch, protein, and fat, and tell where these enzymes are active and what they do. Starch: It is digested to Glucose. Actively transported into the cells intestinal villi. Protein: Digested to amino acids. Actively transported into the cells intestinal villi. Fat: Emulsified by bile, and digested to monoglycerides. Fats defuse into the cells where they join with proteins and form lipids.

4. Why are the pancreas, liver, and gall bladder considered accessory organs of digestion and not an organ of digestion? Their purpose has nothing to do with digestion. They only send things and they don’t break any things down.

5. What is the chief contribution of each of these in the body--carbohydrates, proteins, and lipids (fats)? (158-59) Carbohydrates: Simple and Complex. Simple gives the energy and complex along with several sugar units are digested to glucose. Proteins: They are digested into amino acids. Helps build muscles. Lipids: Fats, oils, and cholesterol.

Multiple Choice:

9. D 10. A 11. B 12. E 13. A 14. A 15. B 16. E 17. D 18. D 19. D 20. B 21. C 22. E 23. B 24. C 25. D 26. A 27. D 28. B 29. C